rename gomarkdown/markdown to status-im/markdown

This resolves a dependency conflict we have with MatterBridge
which was using a newer version of the same package.
This resulted in a JSON marshalling bug that would crash the bridge.

Signed-off-by: Jakub Sokołowski <jakub@status.im>

Makefile

@@ -186,7 +186,15 @@ clean-release:
 	rm -rf $(RELEASE_DIR)
 
 lint-fix:
-	find . -name '*.go' -and -not -name '*.pb.go' -and -not -name 'bindata*' -and -not -name 'migrations.go' -and -not -wholename '*/vendor/*' -exec goimports -local 'github.com/ethereum/go-ethereum,github.com/status-im/status-go' -w {} \;
+	find . \
+		-name '*.go' \
+		-and -not -name '*.pb.go' \
+		-and -not -name 'bindata*' \
+		-and -not -name 'migrations.go' \
+		-and -not -wholename '*/vendor/*' \
+		-exec goimports \
+		-local 'github.com/ethereum/go-ethereum,github.com/status-im/status-go,github.com/status-im/markdown' \
+		-w {} \;
 	$(MAKE) vendor
 
 check-existing-release:

api/nimbus_backend.go

@@ -366,8 +366,8 @@ func (b *nimbusStatusBackend) loadNodeConfig() (*params.NodeConfig, error) {
 	// which is set at the compile time.
 	// What's cached is usually outdated so we overwrite it here.
 	conf.Version = params.Version
-	
+
-	// Replace all relative paths with absolute	
+	// Replace all relative paths with absolute
 	conf.DataDir = filepath.Join(b.rootDataDir, conf.DataDir)
 	conf.ShhextConfig.BackupDisabledDataDir = filepath.Join(b.rootDataDir, conf.ShhextConfig.BackupDisabledDataDir)
 	if len(conf.LogDir) == 0 {

go.mod

@@ -8,8 +8,6 @@ replace github.com/Sirupsen/logrus v1.4.2 => github.com/sirupsen/logrus v1.4.2
 
 replace github.com/docker/docker => github.com/docker/engine v1.4.2-0.20190717161051-705d9623b7c1
 
-replace github.com/gomarkdown/markdown v0.0.0-20191209105822-e3ba6c6109ba => github.com/status-im/markdown v0.0.0-20191209105822-e3ba6c6109ba
-
 require (
 	github.com/beevik/ntp v0.2.0
 	github.com/btcsuite/btcd v0.20.1-beta
@@ -20,7 +18,6 @@ require (
 	github.com/golang-migrate/migrate/v4 v4.8.0 // indirect
 	github.com/golang/mock v1.3.1
 	github.com/golang/protobuf v1.3.2
-	github.com/gomarkdown/markdown v0.0.0-20191209105822-e3ba6c6109ba
 	github.com/google/uuid v1.1.1
 	github.com/jinzhu/copier v0.0.0-20190924061706-b57f9002281a
 	github.com/karalabe/usb v0.0.0-20191104083709-911d15fe12a9 // indirect
@@ -41,6 +38,7 @@ require (
 	github.com/russolsen/transit v0.0.0-20180705123435-0794b4c4505a
 	github.com/status-im/doubleratchet v3.0.0+incompatible
 	github.com/status-im/keycard-go v0.0.0-20200107115650-f38e9a19958e // indirect
+	github.com/status-im/markdown v0.0.0-20200210164614-b9fe92168122
 	github.com/status-im/migrate/v4 v4.6.2-status.2
 	github.com/status-im/rendezvous v1.3.0
 	github.com/status-im/status-go/extkeys v1.1.0
@@ -53,7 +51,7 @@ require (
 	github.com/wealdtech/go-ens/v3 v3.3.0
 	go.uber.org/zap v1.13.0
 	golang.org/x/crypto v0.0.0-20191122220453-ac88ee75c92c
-	golang.org/x/tools v0.0.0-20200116062425-473961ec044c // indirect
+	golang.org/x/tools v0.0.0-20200211045251-2de505fc5306 // indirect
 	gopkg.in/go-playground/assert.v1 v1.2.1 // indirect
 	gopkg.in/go-playground/validator.v9 v9.31.0
 	gopkg.in/natefinch/lumberjack.v2 v2.0.0

go.sum

@@ -633,8 +633,8 @@ github.com/status-im/keycard-go v0.0.0-20190424133014-d95853db0f48 h1:ju5UTwk5Od
 github.com/status-im/keycard-go v0.0.0-20190424133014-d95853db0f48/go.mod h1:RZLeN1LMWmRsyYjvAu+I6Dm9QmlDaIIt+Y+4Kd7Tp+Q=
 github.com/status-im/keycard-go v0.0.0-20200107115650-f38e9a19958e h1:iT/UJdf+SzbgkIPDe/RmlCfLEQ+ab4UMl6toBl9CGZA=
 github.com/status-im/keycard-go v0.0.0-20200107115650-f38e9a19958e/go.mod h1:RZLeN1LMWmRsyYjvAu+I6Dm9QmlDaIIt+Y+4Kd7Tp+Q=
-github.com/status-im/markdown v0.0.0-20191209105822-e3ba6c6109ba h1:Ut2CKuG+L9eWFL7dTEPuLE+RKecUYBkDNhqXSIgY92U=
+github.com/status-im/markdown v0.0.0-20200210164614-b9fe92168122 h1:q18rWqbHHXZGKPAIuvlb2wAAA3XzlMbkEey2bhKf8GY=
-github.com/status-im/markdown v0.0.0-20191209105822-e3ba6c6109ba/go.mod h1:tmG2bxyvZ2EItDO5JewbdFvV45j13IYQgvnMJ3+qAaE=
+github.com/status-im/markdown v0.0.0-20200210164614-b9fe92168122/go.mod h1:9yR8woqkJIHs3sf9pEjYvaGfmhsXR1leEMAX6+Z5y+M=
 github.com/status-im/migrate/v4 v4.6.2-status.2 h1:SdC+sMDl/aI7vUlwD2qj2p7KsK4T60IS9z4/rYCCbI8=
 github.com/status-im/migrate/v4 v4.6.2-status.2/go.mod h1:c/kc90n47GZu/58nnz1OMLTf7uE4Da4gZP5qmU+A/v8=
 github.com/status-im/rendezvous v1.3.0 h1:7RK/MXXW+tlm0asKm1u7Qp7Yni6AO29a7j8+E4Lbjg4=
@@ -748,6 +748,7 @@ golang.org/x/lint v0.0.0-20190313153728-d0100b6bd8b3/go.mod h1:6SW0HCj/g11FgYtHl
 golang.org/x/lint v0.0.0-20190930215403-16217165b5de h1:5hukYrvBGR8/eNkX5mdUezrA6JiaEZDtJb9Ei+1LlBs=
 golang.org/x/lint v0.0.0-20190930215403-16217165b5de/go.mod h1:6SW0HCj/g11FgYtHlgUYUwCkIfeOF89ocIRzGO/8vkc=
 golang.org/x/mod v0.0.0-20190513183733-4bf6d317e70e/go.mod h1:mXi4GBBbnImb6dmsKGUJ2LatrhH/nqhxcFungHvyanc=
+golang.org/x/mod v0.1.1-0.20191105210325-c90efee705ee h1:WG0RUwxtNT4qqaXX3DPA8zHFNm/D9xaBpxzHt1WcA/E=
 golang.org/x/mod v0.1.1-0.20191105210325-c90efee705ee/go.mod h1:QqPTAvyqsEbceGzBzNggFXnrqF1CaUcvgkdR5Ot7KZg=
 golang.org/x/net v0.0.0-20180724234803-3673e40ba225/go.mod h1:mL1N/T3taQHkDXs73rZJwtUhF3w3ftmwwsq0BUmARs4=
 golang.org/x/net v0.0.0-20180826012351-8a410e7b638d/go.mod h1:mL1N/T3taQHkDXs73rZJwtUhF3w3ftmwwsq0BUmARs4=
@@ -829,9 +830,10 @@ golang.org/x/tools v0.0.0-20191029041327-9cc4af7d6b2c/go.mod h1:b+2E5dAYhXwXZwtn
 golang.org/x/tools v0.0.0-20191029190741-b9c20aec41a5/go.mod h1:b+2E5dAYhXwXZwtnZ6UAqBI28+e2cm9otk0dWdXHAEo=
 golang.org/x/tools v0.0.0-20191109212701-97ad0ed33101 h1:LCmXVkvpQCDj724eX6irUTPCJP5GelFHxqGSWL2D1R0=
 golang.org/x/tools v0.0.0-20191109212701-97ad0ed33101/go.mod h1:b+2E5dAYhXwXZwtnZ6UAqBI28+e2cm9otk0dWdXHAEo=
-golang.org/x/tools v0.0.0-20200116062425-473961ec044c h1:D0OxfnjPaEGt7AluXNompYUYGhoY3u6+bValgqfd1vE=
+golang.org/x/tools v0.0.0-20200211045251-2de505fc5306 h1:5gd/+xxg4X7hx+44aG6Sdh17vBwwRFacMaSfqF4wkWk=
-golang.org/x/tools v0.0.0-20200116062425-473961ec044c/go.mod h1:TB2adYChydJhpapKDTa4BR/hXlZSLoq2Wpct/0txZ28=
+golang.org/x/tools v0.0.0-20200211045251-2de505fc5306/go.mod h1:TB2adYChydJhpapKDTa4BR/hXlZSLoq2Wpct/0txZ28=
 golang.org/x/xerrors v0.0.0-20190717185122-a985d3407aa7/go.mod h1:I/5z698sn9Ka8TeJc9MKroUUfqBBauWjQqLJ2OPfmY0=
+golang.org/x/xerrors v0.0.0-20191011141410-1b5146add898 h1:/atklqdjdhuosWIl6AIbOeHJjicWYPqR9bpxqxYG2pA=
 golang.org/x/xerrors v0.0.0-20191011141410-1b5146add898/go.mod h1:I/5z698sn9Ka8TeJc9MKroUUfqBBauWjQqLJ2OPfmY0=
 google.golang.org/api v0.3.1/go.mod h1:6wY9I6uQWHQ8EM57III9mq/AjF+i8G65rmVagqKMtkk=
 google.golang.org/api v0.3.2/go.mod h1:6wY9I6uQWHQ8EM57III9mq/AjF+i8G65rmVagqKMtkk=

mailserver/mailserver_db_postgres_test.go

@@ -12,12 +12,13 @@ import (
 	"testing"
 	"time"
 
+	"github.com/stretchr/testify/require"
+
 	"github.com/ethereum/go-ethereum/rlp"
 	gethbridge "github.com/status-im/status-go/eth-node/bridge/geth"
 	"github.com/status-im/status-go/eth-node/crypto"
 	"github.com/status-im/status-go/eth-node/types"
 	"github.com/status-im/status-go/whisper/v6"
-	"github.com/stretchr/testify/require"
 )
 
 func TestPostgresDB_BuildIteratorWithBloomFilter(t *testing.T) {

protocol/message.go

@@ -7,7 +7,7 @@ import (
 	"unicode"
 	"unicode/utf8"
 
-	"github.com/gomarkdown/markdown"
+	"github.com/status-im/markdown"
 
 	"github.com/status-im/status-go/protocol/protobuf"
 )

services/ext/node_mock.go

@@ -1,9 +1,10 @@
 package ext
 
 import (
+	"go.uber.org/zap"
+
 	"github.com/status-im/status-go/eth-node/types"
 	enstypes "github.com/status-im/status-go/eth-node/types/ens"
-	"go.uber.org/zap"
 )
 
 type TestNodeWrapper struct {

vendor/github.com/status-im/markdown/README.md

@@ -1,21 +1,21 @@
 # Markdown Parser and HTML Renderer for Go
 
-[![GoDoc](https://godoc.org/github.com/gomarkdown/markdown?status.svg)](https://godoc.org/github.com/gomarkdown/markdown) [![codecov](https://codecov.io/gh/gomarkdown/markdown/branch/master/graph/badge.svg)](https://codecov.io/gh/gomarkdown/markdown)
+[![GoDoc](https://godoc.org/github.com/status-im/markdown?status.svg)](https://godoc.org/github.com/gomarkdown/markdown) [![codecov](https://codecov.io/gh/gomarkdown/markdown/branch/master/graph/badge.svg)](https://codecov.io/gh/gomarkdown/markdown)
 
-Package `github.com/gomarkdown/markdown` is a very fast Go library for parsing [Markdown](https://daringfireball.net/projects/markdown/) documents and rendering them to HTML.
+Package `github.com/status-im/markdown` is a very fast Go library for parsing [Markdown](https://daringfireball.net/projects/markdown/) documents and rendering them to HTML.
 
 It's fast and supports common extensions.
 
 ## Installation
 
-    go get -u github.com/gomarkdown/markdown
+    go get -u github.com/status-im/markdown
 
 API Docs:
 
-- https://godoc.org/github.com/gomarkdown/markdown : top level package
+- https://godoc.org/github.com/status-im/markdown : top level package
-- https://godoc.org/github.com/gomarkdown/markdown/ast : defines abstract syntax tree of parsed markdown document
+- https://godoc.org/github.com/status-im/markdown/ast : defines abstract syntax tree of parsed markdown document
-- https://godoc.org/github.com/gomarkdown/markdown/parser : parser
+- https://godoc.org/github.com/status-im/markdown/parser : parser
-- https://godoc.org/github.com/gomarkdown/markdown/html : html renderer
+- https://godoc.org/github.com/status-im/markdown/html : html renderer
 
 ## Usage
 
@@ -30,14 +30,14 @@ output := markdown.ToHTML(md, nil, nil)
 
 Markdown format is loosely specified and there are multiple extensions invented after original specification was created.
 
-The parser supports several [extensions](https://godoc.org/github.com/gomarkdown/markdown/parser#Extensions).
+The parser supports several [extensions](https://godoc.org/github.com/status-im/markdown/parser#Extensions).
 
 Default parser uses most common `parser.CommonExtensions` but you can easily use parser with custom extension:
 
 ```go
 import (
-    "github.com/gomarkdown/markdown"
+    "github.com/status-im/markdown"
-    "github.com/gomarkdown/markdown/parser"
+    "github.com/status-im/markdown/parser"
 )
 
 extensions := parser.CommonExtensions | parser.AutoHeadingIDs
@@ -49,14 +49,14 @@ html := markdown.ToHTML(md, parser, nil)
 
 ## Customizing HTML renderer
 
-Similarly, HTML renderer can be configured with different [options](https://godoc.org/github.com/gomarkdown/markdown/html#RendererOptions)
+Similarly, HTML renderer can be configured with different [options](https://godoc.org/github.com/status-im/markdown/html#RendererOptions)
 
 Here's how to use a custom renderer:
 
 ```go
 import (
-    "github.com/gomarkdown/markdown"
+    "github.com/status-im/markdown"
-    "github.com/gomarkdown/markdown/html"
+    "github.com/status-im/markdown/html"
 )
 
 htmlFlags := html.CommonFlags | html.HrefTargetBlank
@@ -69,7 +69,7 @@ html := markdown.ToHTML(md, nil, renderer)
 
 HTML renderer also supports reusing most of the logic and overriding rendering of only specifc nodes.
 
-You can provide [RenderNodeFunc](https://godoc.org/github.com/gomarkdown/markdown/html#RenderNodeFunc) in [RendererOptions](https://godoc.org/github.com/gomarkdown/markdown/html#RendererOptions).
+You can provide [RenderNodeFunc](https://godoc.org/github.com/status-im/markdown/html#RenderNodeFunc) in [RendererOptions](https://godoc.org/github.com/gomarkdown/markdown/html#RendererOptions).
 
 The function is called for each node in AST, you can implement custom rendering logic and tell HTML renderer to skip rendering this node.
 
@@ -77,9 +77,9 @@ Here's the simplest example that drops all code blocks from the output:
 
 ````go
 import (
-    "github.com/gomarkdown/markdown"
+    "github.com/status-im/markdown"
-    "github.com/gomarkdown/markdown/ast"
+    "github.com/status-im/markdown/ast"
-    "github.com/gomarkdown/markdown/html"
+    "github.com/status-im/markdown/html"
 )
 
 // return (ast.GoToNext, true) to tell html renderer to skip rendering this node
@@ -113,7 +113,7 @@ Here's an example of simple usage with Bluemonday:
 ```go
 import (
     "github.com/microcosm-cc/bluemonday"
-    "github.com/gomarkdown/markdown"
+    "github.com/status-im/markdown"
 )
 
 // ...
@@ -152,7 +152,7 @@ To run: `mdtohtml input-file [output-file]`
 
   NOTE: "safety" in this context means _runtime safety only_. In order to
   protect yourself against JavaScript injection in untrusted content, see
-  [this example](https://github.com/gomarkdown/markdown#sanitize-untrusted-content).
+  [this example](https://github.com/status-im/markdown#sanitize-untrusted-content).
 
 - **Fast**. It is fast enough to render on-demand in
   most web applications without having to cache the output.

vendor/github.com/status-im/markdown/doc.go

@@ -16,9 +16,9 @@ Customizing parsing and HTML rendering
 You can customize parser and HTML renderer:
 
 	import (
-		"github.com/gomarkdown/markdown/parser"
+		"github.com/status-im/markdown/parser"
-		"github.com/gomarkdown/markdown/renderer"
+		"github.com/status-im/markdown/renderer"
-		"github.com/gomarkdown/markdown"
+		"github.com/status-im/markdown"
 	)
 	extensions := parser.CommonExtensions | parser.AutoHeadingIDs
 	p := parser.NewWithExtensions(extensions)

vendor/github.com/status-im/markdown/go.mod

@@ -1,4 +1,4 @@
-module github.com/gomarkdown/markdown
+module github.com/status-im/markdown
 
 go 1.12
 

vendor/github.com/status-im/markdown/markdown.go

@@ -4,8 +4,8 @@ import (
 	"bytes"
 	"io"
 
-	"github.com/gomarkdown/markdown/ast"
+	"github.com/status-im/markdown/ast"
-	"github.com/gomarkdown/markdown/parser"
+	"github.com/status-im/markdown/parser"
 )
 
 // Renderer is an interface for implementing custom renderers.

vendor/github.com/status-im/markdown/parser/aside.go

@@ -3,7 +3,7 @@ package parser
 import (
 	"bytes"
 
-	"github.com/gomarkdown/markdown/ast"
+	"github.com/status-im/markdown/ast"
 )
 
 // returns aisde prefix length

vendor/github.com/status-im/markdown/parser/attribute.go

@@ -3,7 +3,7 @@ package parser
 import (
 	"bytes"
 
-	"github.com/gomarkdown/markdown/ast"
+	"github.com/status-im/markdown/ast"
 )
 
 // attribute parses a (potential) block attribute and adds it to p.

vendor/github.com/status-im/markdown/parser/block.go

@@ -6,7 +6,7 @@ import (
 	"regexp"
 	"unicode"
 
-	"github.com/gomarkdown/markdown/ast"
+	"github.com/status-im/markdown/ast"
 )
 
 // Parsing block-level elements.

vendor/github.com/status-im/markdown/parser/citation.go

@@ -3,7 +3,7 @@ package parser
 import (
 	"bytes"
 
-	"github.com/gomarkdown/markdown/ast"
+	"github.com/status-im/markdown/ast"
 )
 
 // citation parses a citation. In its most simple form [@ref], we allow multiple

vendor/github.com/status-im/markdown/parser/figures.go

@@ -3,7 +3,7 @@ package parser
 import (
 	"bytes"
 
-	"github.com/gomarkdown/markdown/ast"
+	"github.com/status-im/markdown/ast"
 )
 
 // sFigureLine checks if there's a figure line (e.g., !--- ) at the beginning of data,

vendor/github.com/status-im/markdown/parser/inline.go

@@ -5,7 +5,7 @@ import (
 	"regexp"
 	"strconv"
 
-	"github.com/gomarkdown/markdown/ast"
+	"github.com/status-im/markdown/ast"
 )
 
 // Parsing of inline elements

vendor/github.com/status-im/markdown/parser/matter.go

@@ -3,7 +3,7 @@ package parser
 import (
 	"bytes"
 
-	"github.com/gomarkdown/markdown/ast"
+	"github.com/status-im/markdown/ast"
 )
 
 func (p *Parser) documentMatter(data []byte) int {

vendor/github.com/status-im/markdown/parser/options.go

@@ -1,7 +1,7 @@
 package parser
 
 import (
-	"github.com/gomarkdown/markdown/ast"
+	"github.com/status-im/markdown/ast"
 )
 
 // Flags control optional behavior of parser.

vendor/github.com/status-im/markdown/parser/parser.go

@@ -9,7 +9,7 @@ import (
 	"strings"
 	"unicode/utf8"
 
-	"github.com/gomarkdown/markdown/ast"
+	"github.com/status-im/markdown/ast"
 )
 
 // Extensions is a bitmask of enabled parser extensions.

vendor/github.com/status-im/markdown/parser/ref.go

@@ -4,7 +4,7 @@ import (
 	"bytes"
 	"fmt"
 
-	"github.com/gomarkdown/markdown/ast"
+	"github.com/status-im/markdown/ast"
 )
 
 // parse '(#r)', where r does not contain spaces. Or.

vendor/golang.org/x/tools/go/analysis/doc.go

@@ -1,6 +1,6 @@
 /*
 
-The analysis package defines the interface between a modular static
+Package analysis defines the interface between a modular static
 analysis and an analysis driver program.
 
 

vendor/golang.org/x/tools/go/ast/astutil/imports.go

@@ -275,9 +275,10 @@ func DeleteNamedImport(fset *token.FileSet, f *ast.File, name, path string) (del
 
 				// We deleted an entry but now there may be
 				// a blank line-sized hole where the import was.
-				if line-lastLine > 1 {
+				if line-lastLine > 1 || !gen.Rparen.IsValid() {
 					// There was a blank line immediately preceding the deleted import,
-					// so there's no need to close the hole.
+					// so there's no need to close the hole. The right parenthesis is
+					// invalid after AddImport to an import statement without parenthesis.
 					// Do nothing.
 				} else if line != fset.File(gen.Rparen).LineCount() {
 					// There was no blank line. Close the hole.

vendor/golang.org/x/tools/go/ast/inspector/inspector.go

@@ -90,7 +90,7 @@ func (in *Inspector) Preorder(types []ast.Node, f func(ast.Node)) {
 // The types argument, if non-empty, enables type-based filtering of
 // events. The function f if is called only for nodes whose type
 // matches an element of the types slice.
-func (in *Inspector) Nodes(types []ast.Node, f func(n ast.Node, push bool) (prune bool)) {
+func (in *Inspector) Nodes(types []ast.Node, f func(n ast.Node, push bool) (proceed bool)) {
 	mask := maskOf(types)
 	for i := 0; i < len(in.events); {
 		ev := in.events[i]
@@ -114,7 +114,7 @@ func (in *Inspector) Nodes(types []ast.Node, f func(n ast.Node, push bool) (prun
 // supplies each call to f an additional argument, the current
 // traversal stack. The stack's first element is the outermost node,
 // an *ast.File; its last is the innermost, n.
-func (in *Inspector) WithStack(types []ast.Node, f func(n ast.Node, push bool, stack []ast.Node) (prune bool)) {
+func (in *Inspector) WithStack(types []ast.Node, f func(n ast.Node, push bool, stack []ast.Node) (proceed bool)) {
 	mask := maskOf(types)
 	var stack []ast.Node
 	for i := 0; i < len(in.events); {

vendor/golang.org/x/tools/go/internal/gcimporter/gcimporter.go

@@ -344,7 +344,7 @@ func (p *parser) expectKeyword(keyword string) {
 
 // PackageId = string_lit .
 //
-func (p *parser) parsePackageId() string {
+func (p *parser) parsePackageID() string {
 	id, err := strconv.Unquote(p.expect(scanner.String))
 	if err != nil {
 		p.error(err)
@@ -384,7 +384,7 @@ func (p *parser) parseDotIdent() string {
 //
 func (p *parser) parseQualifiedName() (id, name string) {
 	p.expect('@')
-	id = p.parsePackageId()
+	id = p.parsePackageID()
 	p.expect('.')
 	// Per rev f280b8a485fd (10/2/2013), qualified names may be used for anonymous fields.
 	if p.tok == '?' {
@@ -696,7 +696,7 @@ func (p *parser) parseInterfaceType(parent *types.Package) types.Type {
 
 	// Complete requires the type's embedded interfaces to be fully defined,
 	// but we do not define any
-	return types.NewInterface(methods, nil).Complete()
+	return newInterface(methods, nil).Complete()
 }
 
 // ChanType = ( "chan" [ "<-" ] | "<-" "chan" ) Type .
@@ -785,7 +785,7 @@ func (p *parser) parseType(parent *types.Package) types.Type {
 func (p *parser) parseImportDecl() {
 	p.expectKeyword("import")
 	name := p.parsePackageName()
-	p.getPkg(p.parsePackageId(), name)
+	p.getPkg(p.parsePackageID(), name)
 }
 
 // int_lit = [ "+" | "-" ] { "0" ... "9" } .

vendor/golang.org/x/tools/go/packages/golist.go

@@ -6,17 +6,17 @@ package packages
 
 import (
 	"bytes"
+	"context"
 	"encoding/json"
 	"fmt"
 	"go/types"
-	"io/ioutil"
 	"log"
 	"os"
 	"os/exec"
 	"path"
 	"path/filepath"
 	"reflect"
-	"regexp"
+	"sort"
 	"strconv"
 	"strings"
 	"sync"
@@ -24,8 +24,6 @@ import (
 	"unicode"
 
 	"golang.org/x/tools/go/internal/packagesdriver"
-	"golang.org/x/tools/internal/gopathwalk"
-	"golang.org/x/tools/internal/semver"
 )
 
 // debug controls verbose logging.
@@ -44,16 +42,21 @@ type responseDeduper struct {
 	dr           *driverResponse
 }
 
-// init fills in r with a driverResponse.
+func newDeduper() *responseDeduper {
-func (r *responseDeduper) init(dr *driverResponse) {
+	return &responseDeduper{
-	r.dr = dr
+		dr:           &driverResponse{},
-	r.seenRoots = map[string]bool{}
+		seenRoots:    map[string]bool{},
-	r.seenPackages = map[string]*Package{}
+		seenPackages: map[string]*Package{},
+	}
+}
+
+// addAll fills in r with a driverResponse.
+func (r *responseDeduper) addAll(dr *driverResponse) {
 	for _, pkg := range dr.Packages {
-		r.seenPackages[pkg.ID] = pkg
+		r.addPackage(pkg)
 	}
 	for _, root := range dr.Roots {
-		r.seenRoots[root] = true
+		r.addRoot(root)
 	}
 }
 
@@ -73,25 +76,47 @@ func (r *responseDeduper) addRoot(id string) {
 	r.dr.Roots = append(r.dr.Roots, id)
 }
 
-// goInfo contains global information from the go tool.
+type golistState struct {
-type goInfo struct {
+	cfg *Config
-	rootDirs map[string]string
+	ctx context.Context
-	env      goEnv
+
+	envOnce    sync.Once
+	goEnvError error
+	goEnv      map[string]string
+
+	rootsOnce     sync.Once
+	rootDirsError error
+	rootDirs      map[string]string
+
+	// vendorDirs caches the (non)existence of vendor directories.
+	vendorDirs map[string]bool
 }
 
-type goEnv struct {
+// getEnv returns Go environment variables. Only specific variables are
-	modulesOn bool
+// populated -- computing all of them is slow.
+func (state *golistState) getEnv() (map[string]string, error) {
+	state.envOnce.Do(func() {
+		var b *bytes.Buffer
+		b, state.goEnvError = state.invokeGo("env", "-json", "GOMOD", "GOPATH")
+		if state.goEnvError != nil {
+			return
+		}
+
+		state.goEnv = make(map[string]string)
+		decoder := json.NewDecoder(b)
+		if state.goEnvError = decoder.Decode(&state.goEnv); state.goEnvError != nil {
+			return
+		}
+	})
+	return state.goEnv, state.goEnvError
 }
 
-func determineEnv(cfg *Config) goEnv {
+// mustGetEnv is a convenience function that can be used if getEnv has already succeeded.
-	buf, err := invokeGo(cfg, "env", "GOMOD")
+func (state *golistState) mustGetEnv() map[string]string {
+	env, err := state.getEnv()
 	if err != nil {
-		return goEnv{}
+		panic(fmt.Sprintf("mustGetEnv: %v", err))
 	}
-	gomod := bytes.TrimSpace(buf.Bytes())
-
-	env := goEnv{}
-	env.modulesOn = len(gomod) > 0
 	return env
 }
 
@@ -99,47 +124,38 @@ func determineEnv(cfg *Config) goEnv {
 // the build system package structure.
 // See driver for more details.
 func goListDriver(cfg *Config, patterns ...string) (*driverResponse, error) {
-	var sizes types.Sizes
+	// Make sure that any asynchronous go commands are killed when we return.
+	parentCtx := cfg.Context
+	if parentCtx == nil {
+		parentCtx = context.Background()
+	}
+	ctx, cancel := context.WithCancel(parentCtx)
+	defer cancel()
+
+	response := newDeduper()
+
+	// Fill in response.Sizes asynchronously if necessary.
 	var sizeserr error
 	var sizeswg sync.WaitGroup
 	if cfg.Mode&NeedTypesSizes != 0 || cfg.Mode&NeedTypes != 0 {
 		sizeswg.Add(1)
 		go func() {
-			sizes, sizeserr = getSizes(cfg)
+			var sizes types.Sizes
+			sizes, sizeserr = packagesdriver.GetSizesGolist(ctx, cfg.BuildFlags, cfg.Env, cfg.Dir, usesExportData(cfg))
+			// types.SizesFor always returns nil or a *types.StdSizes.
+			response.dr.Sizes, _ = sizes.(*types.StdSizes)
 			sizeswg.Done()
 		}()
 	}
-	defer sizeswg.Wait()
 
-	// start fetching rootDirs
+	state := &golistState{
-	var info goInfo
+		cfg:        cfg,
-	var rootDirsReady, envReady = make(chan struct{}), make(chan struct{})
+		ctx:        ctx,
-	go func() {
+		vendorDirs: map[string]bool{},
-		info.rootDirs = determineRootDirs(cfg)
-		close(rootDirsReady)
-	}()
-	go func() {
-		info.env = determineEnv(cfg)
-		close(envReady)
-	}()
-	getGoInfo := func() *goInfo {
-		<-rootDirsReady
-		<-envReady
-		return &info
-	}
-
-	// Ensure that we don't leak goroutines: Load is synchronous, so callers will
-	// not expect it to access the fields of cfg after the call returns.
-	defer getGoInfo()
-
-	// always pass getGoInfo to golistDriver
-	golistDriver := func(cfg *Config, patterns ...string) (*driverResponse, error) {
-		return golistDriver(cfg, getGoInfo, patterns...)
 	}
 
 	// Determine files requested in contains patterns
 	var containFiles []string
-	var packagesNamed []string
 	restPatterns := make([]string, 0, len(patterns))
 	// Extract file= and other [querytype]= patterns. Report an error if querytype
 	// doesn't exist.
@@ -155,8 +171,6 @@ extractQueries:
 				containFiles = append(containFiles, value)
 			case "pattern":
 				restPatterns = append(restPatterns, value)
-			case "iamashamedtousethedisabledqueryname":
-				packagesNamed = append(packagesNamed, value)
 			case "": // not a reserved query
 				restPatterns = append(restPatterns, pattern)
 			default:
@@ -172,52 +186,34 @@ extractQueries:
 		}
 	}
 
-	response := &responseDeduper{}
-	var err error
-
 	// See if we have any patterns to pass through to go list. Zero initial
 	// patterns also requires a go list call, since it's the equivalent of
 	// ".".
 	if len(restPatterns) > 0 || len(patterns) == 0 {
-		dr, err := golistDriver(cfg, restPatterns...)
+		dr, err := state.createDriverResponse(restPatterns...)
 		if err != nil {
 			return nil, err
 		}
-		response.init(dr)
+		response.addAll(dr)
-	} else {
-		response.init(&driverResponse{})
 	}
 
-	sizeswg.Wait()
-	if sizeserr != nil {
-		return nil, sizeserr
-	}
-	// types.SizesFor always returns nil or a *types.StdSizes
-	response.dr.Sizes, _ = sizes.(*types.StdSizes)
-
-	var containsCandidates []string
-
 	if len(containFiles) != 0 {
-		if err := runContainsQueries(cfg, golistDriver, response, containFiles, getGoInfo); err != nil {
+		if err := state.runContainsQueries(response, containFiles); err != nil {
 			return nil, err
 		}
 	}
 
-	if len(packagesNamed) != 0 {
+	modifiedPkgs, needPkgs, err := state.processGolistOverlay(response)
-		if err := runNamedQueries(cfg, golistDriver, response, packagesNamed); err != nil {
-			return nil, err
-		}
-	}
-
-	modifiedPkgs, needPkgs, err := processGolistOverlay(cfg, response, getGoInfo)
 	if err != nil {
 		return nil, err
 	}
+
+	var containsCandidates []string
 	if len(containFiles) > 0 {
 		containsCandidates = append(containsCandidates, modifiedPkgs...)
 		containsCandidates = append(containsCandidates, needPkgs...)
 	}
-	if err := addNeededOverlayPackages(cfg, golistDriver, response, needPkgs, getGoInfo); err != nil {
+	if err := state.addNeededOverlayPackages(response, needPkgs); err != nil {
 		return nil, err
 	}
 	// Check candidate packages for containFiles.
@@ -246,28 +242,32 @@ extractQueries:
 		}
 	}
 
+	sizeswg.Wait()
+	if sizeserr != nil {
+		return nil, sizeserr
+	}
 	return response.dr, nil
 }
 
-func addNeededOverlayPackages(cfg *Config, driver driver, response *responseDeduper, pkgs []string, getGoInfo func() *goInfo) error {
+func (state *golistState) addNeededOverlayPackages(response *responseDeduper, pkgs []string) error {
 	if len(pkgs) == 0 {
 		return nil
 	}
-	dr, err := driver(cfg, pkgs...)
+	dr, err := state.createDriverResponse(pkgs...)
 	if err != nil {
 		return err
 	}
 	for _, pkg := range dr.Packages {
 		response.addPackage(pkg)
 	}
-	_, needPkgs, err := processGolistOverlay(cfg, response, getGoInfo)
+	_, needPkgs, err := state.processGolistOverlay(response)
 	if err != nil {
 		return err
 	}
-	return addNeededOverlayPackages(cfg, driver, response, needPkgs, getGoInfo)
+	return state.addNeededOverlayPackages(response, needPkgs)
 }
 
-func runContainsQueries(cfg *Config, driver driver, response *responseDeduper, queries []string, goInfo func() *goInfo) error {
+func (state *golistState) runContainsQueries(response *responseDeduper, queries []string) error {
 	for _, query := range queries {
 		// TODO(matloob): Do only one query per directory.
 		fdir := filepath.Dir(query)
@@ -277,44 +277,17 @@ func runContainsQueries(cfg *Config, driver driver, response *responseDeduper, q
 		if err != nil {
 			return fmt.Errorf("could not determine absolute path of file= query path %q: %v", query, err)
 		}
-		dirResponse, err := driver(cfg, pattern)
+		dirResponse, err := state.createDriverResponse(pattern)
-		if err != nil || (len(dirResponse.Packages) == 1 && len(dirResponse.Packages[0].Errors) == 1) {
+
-			// There was an error loading the package. Try to load the file as an ad-hoc package.
+		// If there was an error loading the package, or the package is returned
-			// Usually the error will appear in a returned package, but may not if we're in modules mode
+		// with errors, try to load the file as an ad-hoc package.
-			// and the ad-hoc is located outside a module.
+		// Usually the error will appear in a returned package, but may not if we're
+		// in module mode and the ad-hoc is located outside a module.
+		if err != nil || len(dirResponse.Packages) == 1 && len(dirResponse.Packages[0].GoFiles) == 0 &&
+			len(dirResponse.Packages[0].Errors) == 1 {
 			var queryErr error
-			dirResponse, queryErr = driver(cfg, query)
+			if dirResponse, queryErr = state.adhocPackage(pattern, query); queryErr != nil {
-			if queryErr != nil {
+				return err // return the original error
-				// Return the original error if the attempt to fall back failed.
-				return err
-			}
-			// If we get nothing back from `go list`, try to make this file into its own ad-hoc package.
-			if len(dirResponse.Packages) == 0 && queryErr == nil {
-				dirResponse.Packages = append(dirResponse.Packages, &Package{
-					ID:              "command-line-arguments",
-					PkgPath:         query,
-					GoFiles:         []string{query},
-					CompiledGoFiles: []string{query},
-					Imports:         make(map[string]*Package),
-				})
-				dirResponse.Roots = append(dirResponse.Roots, "command-line-arguments")
-			}
-			// Special case to handle issue #33482:
-			// If this is a file= query for ad-hoc packages where the file only exists on an overlay,
-			// and exists outside of a module, add the file in for the package.
-			if len(dirResponse.Packages) == 1 && (dirResponse.Packages[0].ID == "command-line-arguments" ||
-				filepath.ToSlash(dirResponse.Packages[0].PkgPath) == filepath.ToSlash(query)) {
-				if len(dirResponse.Packages[0].GoFiles) == 0 {
-					filename := filepath.Join(pattern, filepath.Base(query)) // avoid recomputing abspath
-					// TODO(matloob): check if the file is outside of a root dir?
-					for path := range cfg.Overlay {
-						if path == filename {
-							dirResponse.Packages[0].Errors = nil
-							dirResponse.Packages[0].GoFiles = []string{path}
-							dirResponse.Packages[0].CompiledGoFiles = []string{path}
-						}
-					}
-				}
 			}
 		}
 		isRoot := make(map[string]bool, len(dirResponse.Roots))
@@ -342,276 +315,47 @@ func runContainsQueries(cfg *Config, driver driver, response *responseDeduper, q
 	return nil
 }
 
-// modCacheRegexp splits a path in a module cache into module, module version, and package.
+// adhocPackage attempts to load or construct an ad-hoc package for a given
-var modCacheRegexp = regexp.MustCompile(`(.*)@([^/\\]*)(.*)`)
+// query, if the original call to the driver produced inadequate results.
-
+func (state *golistState) adhocPackage(pattern, query string) (*driverResponse, error) {
-func runNamedQueries(cfg *Config, driver driver, response *responseDeduper, queries []string) error {
+	response, err := state.createDriverResponse(query)
-	// calling `go env` isn't free; bail out if there's nothing to do.
-	if len(queries) == 0 {
-		return nil
-	}
-	// Determine which directories are relevant to scan.
-	roots, modRoot, err := roots(cfg)
 	if err != nil {
-		return err
+		return nil, err
 	}
-
+	// If we get nothing back from `go list`,
-	// Scan the selected directories. Simple matches, from GOPATH/GOROOT
+	// try to make this file into its own ad-hoc package.
-	// or the local module, can simply be "go list"ed. Matches from the
+	// TODO(rstambler): Should this check against the original response?
-	// module cache need special treatment.
+	if len(response.Packages) == 0 {
-	var matchesMu sync.Mutex
+		response.Packages = append(response.Packages, &Package{
-	var simpleMatches, modCacheMatches []string
+			ID:              "command-line-arguments",
-	add := func(root gopathwalk.Root, dir string) {
+			PkgPath:         query,
-		// Walk calls this concurrently; protect the result slices.
+			GoFiles:         []string{query},
-		matchesMu.Lock()
+			CompiledGoFiles: []string{query},
-		defer matchesMu.Unlock()
+			Imports:         make(map[string]*Package),
-
-		path := dir
-		if dir != root.Path {
-			path = dir[len(root.Path)+1:]
-		}
-		if pathMatchesQueries(path, queries) {
-			switch root.Type {
-			case gopathwalk.RootModuleCache:
-				modCacheMatches = append(modCacheMatches, path)
-			case gopathwalk.RootCurrentModule:
-				// We'd need to read go.mod to find the full
-				// import path. Relative's easier.
-				rel, err := filepath.Rel(cfg.Dir, dir)
-				if err != nil {
-					// This ought to be impossible, since
-					// we found dir in the current module.
-					panic(err)
-				}
-				simpleMatches = append(simpleMatches, "./"+rel)
-			case gopathwalk.RootGOPATH, gopathwalk.RootGOROOT:
-				simpleMatches = append(simpleMatches, path)
-			}
-		}
-	}
-
-	startWalk := time.Now()
-	gopathwalk.Walk(roots, add, gopathwalk.Options{ModulesEnabled: modRoot != "", Debug: debug})
-	cfg.Logf("%v for walk", time.Since(startWalk))
-
-	// Weird special case: the top-level package in a module will be in
-	// whatever directory the user checked the repository out into. It's
-	// more reasonable for that to not match the package name. So, if there
-	// are any Go files in the mod root, query it just to be safe.
-	if modRoot != "" {
-		rel, err := filepath.Rel(cfg.Dir, modRoot)
-		if err != nil {
-			panic(err) // See above.
-		}
-
-		files, err := ioutil.ReadDir(modRoot)
-		if err != nil {
-			panic(err) // See above.
-		}
-
-		for _, f := range files {
-			if strings.HasSuffix(f.Name(), ".go") {
-				simpleMatches = append(simpleMatches, rel)
-				break
-			}
-		}
-	}
-
-	addResponse := func(r *driverResponse) {
-		for _, pkg := range r.Packages {
-			response.addPackage(pkg)
-			for _, name := range queries {
-				if pkg.Name == name {
-					response.addRoot(pkg.ID)
-					break
-				}
-			}
-		}
-	}
-
-	if len(simpleMatches) != 0 {
-		resp, err := driver(cfg, simpleMatches...)
-		if err != nil {
-			return err
-		}
-		addResponse(resp)
-	}
-
-	// Module cache matches are tricky. We want to avoid downloading new
-	// versions of things, so we need to use the ones present in the cache.
-	// go list doesn't accept version specifiers, so we have to write out a
-	// temporary module, and do the list in that module.
-	if len(modCacheMatches) != 0 {
-		// Collect all the matches, deduplicating by major version
-		// and preferring the newest.
-		type modInfo struct {
-			mod   string
-			major string
-		}
-		mods := make(map[modInfo]string)
-		var imports []string
-		for _, modPath := range modCacheMatches {
-			matches := modCacheRegexp.FindStringSubmatch(modPath)
-			mod, ver := filepath.ToSlash(matches[1]), matches[2]
-			importPath := filepath.ToSlash(filepath.Join(matches[1], matches[3]))
-
-			major := semver.Major(ver)
-			if prevVer, ok := mods[modInfo{mod, major}]; !ok || semver.Compare(ver, prevVer) > 0 {
-				mods[modInfo{mod, major}] = ver
-			}
-
-			imports = append(imports, importPath)
-		}
-
-		// Build the temporary module.
-		var gomod bytes.Buffer
-		gomod.WriteString("module modquery\nrequire (\n")
-		for mod, version := range mods {
-			gomod.WriteString("\t" + mod.mod + " " + version + "\n")
-		}
-		gomod.WriteString(")\n")
-
-		tmpCfg := *cfg
-
-		// We're only trying to look at stuff in the module cache, so
-		// disable the network. This should speed things up, and has
-		// prevented errors in at least one case, #28518.
-		tmpCfg.Env = append([]string{"GOPROXY=off"}, cfg.Env...)
-
-		var err error
-		tmpCfg.Dir, err = ioutil.TempDir("", "gopackages-modquery")
-		if err != nil {
-			return err
-		}
-		defer os.RemoveAll(tmpCfg.Dir)
-
-		if err := ioutil.WriteFile(filepath.Join(tmpCfg.Dir, "go.mod"), gomod.Bytes(), 0777); err != nil {
-			return fmt.Errorf("writing go.mod for module cache query: %v", err)
-		}
-
-		// Run the query, using the import paths calculated from the matches above.
-		resp, err := driver(&tmpCfg, imports...)
-		if err != nil {
-			return fmt.Errorf("querying module cache matches: %v", err)
-		}
-		addResponse(resp)
-	}
-
-	return nil
-}
-
-func getSizes(cfg *Config) (types.Sizes, error) {
-	return packagesdriver.GetSizesGolist(cfg.Context, cfg.BuildFlags, cfg.Env, cfg.Dir, usesExportData(cfg))
-}
-
-// roots selects the appropriate paths to walk based on the passed-in configuration,
-// particularly the environment and the presence of a go.mod in cfg.Dir's parents.
-func roots(cfg *Config) ([]gopathwalk.Root, string, error) {
-	stdout, err := invokeGo(cfg, "env", "GOROOT", "GOPATH", "GOMOD")
-	if err != nil {
-		return nil, "", err
-	}
-
-	fields := strings.Split(stdout.String(), "\n")
-	if len(fields) != 4 || len(fields[3]) != 0 {
-		return nil, "", fmt.Errorf("go env returned unexpected output: %q", stdout.String())
-	}
-	goroot, gopath, gomod := fields[0], filepath.SplitList(fields[1]), fields[2]
-	var modDir string
-	if gomod != "" {
-		modDir = filepath.Dir(gomod)
-	}
-
-	var roots []gopathwalk.Root
-	// Always add GOROOT.
-	roots = append(roots, gopathwalk.Root{
-		Path: filepath.Join(goroot, "/src"),
-		Type: gopathwalk.RootGOROOT,
-	})
-	// If modules are enabled, scan the module dir.
-	if modDir != "" {
-		roots = append(roots, gopathwalk.Root{
-			Path: modDir,
-			Type: gopathwalk.RootCurrentModule,
 		})
+		response.Roots = append(response.Roots, "command-line-arguments")
 	}
-	// Add either GOPATH/src or GOPATH/pkg/mod, depending on module mode.
+	// Handle special cases.
-	for _, p := range gopath {
+	if len(response.Packages) == 1 {
-		if modDir != "" {
+		// golang/go#33482: If this is a file= query for ad-hoc packages where
-			roots = append(roots, gopathwalk.Root{
+		// the file only exists on an overlay, and exists outside of a module,
-				Path: filepath.Join(p, "/pkg/mod"),
+		// add the file to the package and remove the errors.
-				Type: gopathwalk.RootModuleCache,
+		if response.Packages[0].ID == "command-line-arguments" ||
-			})
+			filepath.ToSlash(response.Packages[0].PkgPath) == filepath.ToSlash(query) {
-		} else {
+			if len(response.Packages[0].GoFiles) == 0 {
-			roots = append(roots, gopathwalk.Root{
+				filename := filepath.Join(pattern, filepath.Base(query)) // avoid recomputing abspath
-				Path: filepath.Join(p, "/src"),
+				// TODO(matloob): check if the file is outside of a root dir?
-				Type: gopathwalk.RootGOPATH,
+				for path := range state.cfg.Overlay {
-			})
+					if path == filename {
-		}
+						response.Packages[0].Errors = nil
-	}
+						response.Packages[0].GoFiles = []string{path}
-
+						response.Packages[0].CompiledGoFiles = []string{path}
-	return roots, modDir, nil
+					}
-}
+				}
-
-// These functions were copied from goimports. See further documentation there.
-
-// pathMatchesQueries is adapted from pkgIsCandidate.
-// TODO: is it reasonable to do Contains here, rather than an exact match on a path component?
-func pathMatchesQueries(path string, queries []string) bool {
-	lastTwo := lastTwoComponents(path)
-	for _, query := range queries {
-		if strings.Contains(lastTwo, query) {
-			return true
-		}
-		if hasHyphenOrUpperASCII(lastTwo) && !hasHyphenOrUpperASCII(query) {
-			lastTwo = lowerASCIIAndRemoveHyphen(lastTwo)
-			if strings.Contains(lastTwo, query) {
-				return true
 			}
 		}
 	}
-	return false
+	return response, nil
-}
-
-// lastTwoComponents returns at most the last two path components
-// of v, using either / or \ as the path separator.
-func lastTwoComponents(v string) string {
-	nslash := 0
-	for i := len(v) - 1; i >= 0; i-- {
-		if v[i] == '/' || v[i] == '\\' {
-			nslash++
-			if nslash == 2 {
-				return v[i:]
-			}
-		}
-	}
-	return v
-}
-
-func hasHyphenOrUpperASCII(s string) bool {
-	for i := 0; i < len(s); i++ {
-		b := s[i]
-		if b == '-' || ('A' <= b && b <= 'Z') {
-			return true
-		}
-	}
-	return false
-}
-
-func lowerASCIIAndRemoveHyphen(s string) (ret string) {
-	buf := make([]byte, 0, len(s))
-	for i := 0; i < len(s); i++ {
-		b := s[i]
-		switch {
-		case b == '-':
-			continue
-		case 'A' <= b && b <= 'Z':
-			buf = append(buf, b+('a'-'A'))
-		default:
-			buf = append(buf, b)
-		}
-	}
-	return string(buf)
 }
 
 // Fields must match go list;
@@ -656,10 +400,9 @@ func otherFiles(p *jsonPackage) [][]string {
 	return [][]string{p.CFiles, p.CXXFiles, p.MFiles, p.HFiles, p.FFiles, p.SFiles, p.SwigFiles, p.SwigCXXFiles, p.SysoFiles}
 }
 
-// golistDriver uses the "go list" command to expand the pattern
+// createDriverResponse uses the "go list" command to expand the pattern
-// words and return metadata for the specified packages. dir may be
+// words and return a response for the specified packages.
-// "" and env may be nil, as per os/exec.Command.
+func (state *golistState) createDriverResponse(words ...string) (*driverResponse, error) {
-func golistDriver(cfg *Config, rootsDirs func() *goInfo, words ...string) (*driverResponse, error) {
 	// go list uses the following identifiers in ImportPath and Imports:
 	//
 	// 	"p"			-- importable package or main (command)
@@ -673,11 +416,13 @@ func golistDriver(cfg *Config, rootsDirs func() *goInfo, words ...string) (*driv
 
 	// Run "go list" for complete
 	// information on the specified packages.
-	buf, err := invokeGo(cfg, "list", golistargs(cfg, words)...)
+	buf, err := state.invokeGo("list", golistargs(state.cfg, words)...)
 	if err != nil {
 		return nil, err
 	}
 	seen := make(map[string]*jsonPackage)
+	pkgs := make(map[string]*Package)
+	additionalErrors := make(map[string][]Error)
 	// Decode the JSON and convert it to Package form.
 	var response driverResponse
 	for dec := json.NewDecoder(buf); dec.More(); {
@@ -708,18 +453,72 @@ func golistDriver(cfg *Config, rootsDirs func() *goInfo, words ...string) (*driv
 		// contained in a known module or GOPATH entry. This will allow the package to be
 		// properly "reclaimed" when overlays are processed.
 		if filepath.IsAbs(p.ImportPath) && p.Error != nil {
-			pkgPath, ok := getPkgPath(cfg, p.ImportPath, rootsDirs)
+			pkgPath, ok, err := state.getPkgPath(p.ImportPath)
+			if err != nil {
+				return nil, err
+			}
 			if ok {
 				p.ImportPath = pkgPath
 			}
 		}
 
 		if old, found := seen[p.ImportPath]; found {
-			if !reflect.DeepEqual(p, old) {
+			// If one version of the package has an error, and the other doesn't, assume
-				return nil, fmt.Errorf("internal error: go list gives conflicting information for package %v", p.ImportPath)
+			// that this is a case where go list is reporting a fake dependency variant
+			// of the imported package: When a package tries to invalidly import another
+			// package, go list emits a variant of the imported package (with the same
+			// import path, but with an error on it, and the package will have a
+			// DepError set on it). An example of when this can happen is for imports of
+			// main packages: main packages can not be imported, but they may be
+			// separately matched and listed by another pattern.
+			// See golang.org/issue/36188 for more details.
+
+			// The plan is that eventually, hopefully in Go 1.15, the error will be
+			// reported on the importing package rather than the duplicate "fake"
+			// version of the imported package. Once all supported versions of Go
+			// have the new behavior this logic can be deleted.
+			// TODO(matloob): delete the workaround logic once all supported versions of
+			// Go return the errors on the proper package.
+
+			// There should be exactly one version of a package that doesn't have an
+			// error.
+			if old.Error == nil && p.Error == nil {
+				if !reflect.DeepEqual(p, old) {
+					return nil, fmt.Errorf("internal error: go list gives conflicting information for package %v", p.ImportPath)
+				}
+				continue
 			}
-			// skip the duplicate
+
-			continue
+			// Determine if this package's error needs to be bubbled up.
+			// This is a hack, and we expect for go list to eventually set the error
+			// on the package.
+			if old.Error != nil {
+				var errkind string
+				if strings.Contains(old.Error.Err, "not an importable package") {
+					errkind = "not an importable package"
+				} else if strings.Contains(old.Error.Err, "use of internal package") && strings.Contains(old.Error.Err, "not allowed") {
+					errkind = "use of internal package not allowed"
+				}
+				if errkind != "" {
+					if len(old.Error.ImportStack) < 2 {
+						return nil, fmt.Errorf(`internal error: go list gave a %q error with an import stack with fewer than two elements`, errkind)
+					}
+					importingPkg := old.Error.ImportStack[len(old.Error.ImportStack)-2]
+					additionalErrors[importingPkg] = append(additionalErrors[importingPkg], Error{
+						Pos:  old.Error.Pos,
+						Msg:  old.Error.Err,
+						Kind: ListError,
+					})
+				}
+			}
+
+			// Make sure that if there's a version of the package without an error,
+			// that's the one reported to the user.
+			if old.Error == nil {
+				continue
+			}
+
+			// This package will replace the old one at the end of the loop.
 		}
 		seen[p.ImportPath] = p
 
@@ -729,6 +528,7 @@ func golistDriver(cfg *Config, rootsDirs func() *goInfo, words ...string) (*driv
 			GoFiles:         absJoin(p.Dir, p.GoFiles, p.CgoFiles),
 			CompiledGoFiles: absJoin(p.Dir, p.CompiledGoFiles),
 			OtherFiles:      absJoin(p.Dir, otherFiles(p)...),
+			forTest:         p.ForTest,
 		}
 
 		// Work around https://golang.org/issue/28749:
@@ -817,29 +617,37 @@ func golistDriver(cfg *Config, rootsDirs func() *goInfo, words ...string) (*driv
 			})
 		}
 
+		pkgs[pkg.ID] = pkg
+	}
+
+	for id, errs := range additionalErrors {
+		if p, ok := pkgs[id]; ok {
+			p.Errors = append(p.Errors, errs...)
+		}
+	}
+	for _, pkg := range pkgs {
 		response.Packages = append(response.Packages, pkg)
 	}
+	sort.Slice(response.Packages, func(i, j int) bool { return response.Packages[i].ID < response.Packages[j].ID })
 
 	return &response, nil
 }
 
 // getPkgPath finds the package path of a directory if it's relative to a root directory.
-func getPkgPath(cfg *Config, dir string, goInfo func() *goInfo) (string, bool) {
+func (state *golistState) getPkgPath(dir string) (string, bool, error) {
 	absDir, err := filepath.Abs(dir)
 	if err != nil {
-		cfg.Logf("error getting absolute path of %s: %v", dir, err)
+		return "", false, err
-		return "", false
 	}
-	for rdir, rpath := range goInfo().rootDirs {
+	roots, err := state.determineRootDirs()
-		absRdir, err := filepath.Abs(rdir)
+	if err != nil {
-		if err != nil {
+		return "", false, err
-			cfg.Logf("error getting absolute path of %s: %v", rdir, err)
+	}
-			continue
+
-		}
+	for rdir, rpath := range roots {
 		// Make sure that the directory is in the module,
 		// to avoid creating a path relative to another module.
-		if !strings.HasPrefix(absDir, absRdir) {
+		if !strings.HasPrefix(absDir, rdir) {
-			cfg.Logf("%s does not have prefix %s", absDir, absRdir)
 			continue
 		}
 		// TODO(matloob): This doesn't properly handle symlinks.
@@ -854,11 +662,11 @@ func getPkgPath(cfg *Config, dir string, goInfo func() *goInfo) (string, bool) {
 			// Once the file is saved, gopls, or the next invocation of the tool will get the correct
 			// result straight from golist.
 			// TODO(matloob): Implement module tiebreaking?
-			return path.Join(rpath, filepath.ToSlash(r)), true
+			return path.Join(rpath, filepath.ToSlash(r)), true, nil
 		}
-		return filepath.ToSlash(r), true
+		return filepath.ToSlash(r), true, nil
 	}
-	return "", false
+	return "", false, nil
 }
 
 // absJoin absolutizes and flattens the lists of files.
@@ -878,7 +686,7 @@ func golistargs(cfg *Config, words []string) []string {
 	const findFlags = NeedImports | NeedTypes | NeedSyntax | NeedTypesInfo
 	fullargs := []string{
 		"-e", "-json",
-		fmt.Sprintf("-compiled=%t", cfg.Mode&(NeedCompiledGoFiles|NeedSyntax|NeedTypesInfo|NeedTypesSizes) != 0),
+		fmt.Sprintf("-compiled=%t", cfg.Mode&(NeedCompiledGoFiles|NeedSyntax|NeedTypes|NeedTypesInfo|NeedTypesSizes) != 0),
 		fmt.Sprintf("-test=%t", cfg.Tests),
 		fmt.Sprintf("-export=%t", usesExportData(cfg)),
 		fmt.Sprintf("-deps=%t", cfg.Mode&NeedImports != 0),
@@ -893,13 +701,17 @@ func golistargs(cfg *Config, words []string) []string {
 }
 
 // invokeGo returns the stdout of a go command invocation.
-func invokeGo(cfg *Config, verb string, args ...string) (*bytes.Buffer, error) {
+func (state *golistState) invokeGo(verb string, args ...string) (*bytes.Buffer, error) {
+	cfg := state.cfg
+
 	stdout := new(bytes.Buffer)
 	stderr := new(bytes.Buffer)
 	goArgs := []string{verb}
-	goArgs = append(goArgs, cfg.BuildFlags...)
+	if verb != "env" {
+		goArgs = append(goArgs, cfg.BuildFlags...)
+	}
 	goArgs = append(goArgs, args...)
-	cmd := exec.CommandContext(cfg.Context, "go", goArgs...)
+	cmd := exec.CommandContext(state.ctx, "go", goArgs...)
 	// On darwin the cwd gets resolved to the real path, which breaks anything that
 	// expects the working directory to keep the original path, including the
 	// go command when dealing with modules.
@@ -911,7 +723,7 @@ func invokeGo(cfg *Config, verb string, args ...string) (*bytes.Buffer, error) {
 	cmd.Stdout = stdout
 	cmd.Stderr = stderr
 	defer func(start time.Time) {
-		cfg.Logf("%s for %v, stderr: <<%s>> stdout: <<%s>>\n", time.Since(start), cmdDebugStr(cmd, args...), stderr, stdout)
+		cfg.Logf("%s for %v, stderr: <<%s>> stdout: <<%s>>\n", time.Since(start), cmdDebugStr(cmd, goArgs...), stderr, stdout)
 	}(time.Now())
 
 	if err := cmd.Run(); err != nil {
@@ -951,7 +763,12 @@ func invokeGo(cfg *Config, verb string, args ...string) (*bytes.Buffer, error) {
 				!strings.ContainsRune("!\"#$%&'()*,:;<=>?[\\]^`{|}\uFFFD", r)
 		}
 		if len(stderr.String()) > 0 && strings.HasPrefix(stderr.String(), "# ") {
-			if strings.HasPrefix(strings.TrimLeftFunc(stderr.String()[len("# "):], isPkgPathRune), "\n") {
+			msg := stderr.String()[len("# "):]
+			if strings.HasPrefix(strings.TrimLeftFunc(msg, isPkgPathRune), "\n") {
+				return stdout, nil
+			}
+			// Treat pkg-config errors as a special case (golang.org/issue/36770).
+			if strings.HasPrefix(msg, "pkg-config") {
 				return stdout, nil
 			}
 		}

vendor/golang.org/x/tools/go/packages/golist_overlay.go

@@ -1,12 +1,13 @@
 package packages
 
 import (
-	"bytes"
 	"encoding/json"
 	"fmt"
 	"go/parser"
 	"go/token"
+	"os"
 	"path/filepath"
+	"sort"
 	"strconv"
 	"strings"
 )
@@ -16,7 +17,7 @@ import (
 // sometimes incorrect.
 // TODO(matloob): Handle unsupported cases, including the following:
 // - determining the correct package to add given a new import path
-func processGolistOverlay(cfg *Config, response *responseDeduper, rootDirs func() *goInfo) (modifiedPkgs, needPkgs []string, err error) {
+func (state *golistState) processGolistOverlay(response *responseDeduper) (modifiedPkgs, needPkgs []string, err error) {
 	havePkgs := make(map[string]string) // importPath -> non-test package ID
 	needPkgsSet := make(map[string]bool)
 	modifiedPkgsSet := make(map[string]bool)
@@ -34,7 +35,23 @@ func processGolistOverlay(cfg *Config, response *responseDeduper, rootDirs func(
 	// potentially modifying the transitive set of dependencies).
 	var overlayAddsImports bool
 
-	for opath, contents := range cfg.Overlay {
+	// If both a package and its test package are created by the overlay, we
+	// need the real package first. Process all non-test files before test
+	// files, and make the whole process deterministic while we're at it.
+	var overlayFiles []string
+	for opath := range state.cfg.Overlay {
+		overlayFiles = append(overlayFiles, opath)
+	}
+	sort.Slice(overlayFiles, func(i, j int) bool {
+		iTest := strings.HasSuffix(overlayFiles[i], "_test.go")
+		jTest := strings.HasSuffix(overlayFiles[j], "_test.go")
+		if iTest != jTest {
+			return !iTest // non-tests are before tests.
+		}
+		return overlayFiles[i] < overlayFiles[j]
+	})
+	for _, opath := range overlayFiles {
+		contents := state.cfg.Overlay[opath]
 		base := filepath.Base(opath)
 		dir := filepath.Dir(opath)
 		var pkg *Package           // if opath belongs to both a package and its test variant, this will be the test variant
@@ -64,14 +81,8 @@ func processGolistOverlay(cfg *Config, response *responseDeduper, rootDirs func(
 					testVariantOf = p
 					continue nextPackage
 				}
+				// We must have already seen the package of which this is a test variant.
 				if pkg != nil && p != pkg && pkg.PkgPath == p.PkgPath {
-					// If we've already seen the test variant,
-					// make sure to label which package it is a test variant of.
-					if hasTestFiles(pkg) {
-						testVariantOf = p
-						continue nextPackage
-					}
-					// If we have already seen the package of which this is a test variant.
 					if hasTestFiles(p) {
 						testVariantOf = pkg
 					}
@@ -86,7 +97,10 @@ func processGolistOverlay(cfg *Config, response *responseDeduper, rootDirs func(
 		if pkg == nil {
 			// Try to find the module or gopath dir the file is contained in.
 			// Then for modules, add the module opath to the beginning.
-			pkgPath, ok := getPkgPath(cfg, dir, rootDirs)
+			pkgPath, ok, err := state.getPkgPath(dir)
+			if err != nil {
+				return nil, nil, err
+			}
 			if !ok {
 				break
 			}
@@ -114,6 +128,11 @@ func processGolistOverlay(cfg *Config, response *responseDeduper, rootDirs func(
 				if isTestFile && !isXTest && testVariantOf != nil {
 					pkg.GoFiles = append(pkg.GoFiles, testVariantOf.GoFiles...)
 					pkg.CompiledGoFiles = append(pkg.CompiledGoFiles, testVariantOf.CompiledGoFiles...)
+					// Add the package under test and its imports to the test variant.
+					pkg.forTest = testVariantOf.PkgPath
+					for k, v := range testVariantOf.Imports {
+						pkg.Imports[k] = &Package{ID: v.ID}
+					}
 				}
 			}
 		}
@@ -130,42 +149,45 @@ func processGolistOverlay(cfg *Config, response *responseDeduper, rootDirs func(
 			continue
 		}
 		for _, imp := range imports {
-			_, found := pkg.Imports[imp]
+			if _, found := pkg.Imports[imp]; found {
-			if !found {
+				continue
-				overlayAddsImports = true
+			}
-				// TODO(matloob): Handle cases when the following block isn't correct.
+			overlayAddsImports = true
-				// These include imports of vendored packages, etc.
+			id, ok := havePkgs[imp]
-				id, ok := havePkgs[imp]
+			if !ok {
-				if !ok {
+				var err error
-					id = imp
+				id, err = state.resolveImport(dir, imp)
-				}
+				if err != nil {
-				pkg.Imports[imp] = &Package{ID: id}
+					return nil, nil, err
-				// Add dependencies to the non-test variant version of this package as wel.
-				if testVariantOf != nil {
-					testVariantOf.Imports[imp] = &Package{ID: id}
 				}
 			}
+			pkg.Imports[imp] = &Package{ID: id}
+			// Add dependencies to the non-test variant version of this package as well.
+			if testVariantOf != nil {
+				testVariantOf.Imports[imp] = &Package{ID: id}
+			}
 		}
-		continue
 	}
 
-	// toPkgPath tries to guess the package path given the id.
+	// toPkgPath guesses the package path given the id.
-	// This isn't always correct -- it's certainly wrong for
+	toPkgPath := func(sourceDir, id string) (string, error) {
-	// vendored packages' paths.
+		if i := strings.IndexByte(id, ' '); i >= 0 {
-	toPkgPath := func(id string) string {
+			return state.resolveImport(sourceDir, id[:i])
-		// TODO(matloob): Handle vendor paths.
-		i := strings.IndexByte(id, ' ')
-		if i >= 0 {
-			return id[:i]
 		}
-		return id
+		return state.resolveImport(sourceDir, id)
 	}
 
-	// Do another pass now that new packages have been created to determine the
+	// Now that new packages have been created, do another pass to determine
-	// set of missing packages.
+	// the new set of missing packages.
 	for _, pkg := range response.dr.Packages {
 		for _, imp := range pkg.Imports {
-			pkgPath := toPkgPath(imp.ID)
+			if len(pkg.GoFiles) == 0 {
+				return nil, nil, fmt.Errorf("cannot resolve imports for package %q with no Go files", pkg.PkgPath)
+			}
+			pkgPath, err := toPkgPath(filepath.Dir(pkg.GoFiles[0]), imp.ID)
+			if err != nil {
+				return nil, nil, err
+			}
 			if _, ok := havePkgs[pkgPath]; !ok {
 				needPkgsSet[pkgPath] = true
 			}
@@ -185,6 +207,52 @@ func processGolistOverlay(cfg *Config, response *responseDeduper, rootDirs func(
 	return modifiedPkgs, needPkgs, err
 }
 
+// resolveImport finds the the ID of a package given its import path.
+// In particular, it will find the right vendored copy when in GOPATH mode.
+func (state *golistState) resolveImport(sourceDir, importPath string) (string, error) {
+	env, err := state.getEnv()
+	if err != nil {
+		return "", err
+	}
+	if env["GOMOD"] != "" {
+		return importPath, nil
+	}
+
+	searchDir := sourceDir
+	for {
+		vendorDir := filepath.Join(searchDir, "vendor")
+		exists, ok := state.vendorDirs[vendorDir]
+		if !ok {
+			info, err := os.Stat(vendorDir)
+			exists = err == nil && info.IsDir()
+			state.vendorDirs[vendorDir] = exists
+		}
+
+		if exists {
+			vendoredPath := filepath.Join(vendorDir, importPath)
+			if info, err := os.Stat(vendoredPath); err == nil && info.IsDir() {
+				// We should probably check for .go files here, but shame on anyone who fools us.
+				path, ok, err := state.getPkgPath(vendoredPath)
+				if err != nil {
+					return "", err
+				}
+				if ok {
+					return path, nil
+				}
+			}
+		}
+
+		// We know we've hit the top of the filesystem when we Dir / and get /,
+		// or C:\ and get C:\, etc.
+		next := filepath.Dir(searchDir)
+		if next == searchDir {
+			break
+		}
+		searchDir = next
+	}
+	return importPath, nil
+}
+
 func hasTestFiles(p *Package) bool {
 	for _, f := range p.GoFiles {
 		if strings.HasSuffix(f, "_test.go") {
@@ -194,44 +262,59 @@ func hasTestFiles(p *Package) bool {
 	return false
 }
 
-// determineRootDirs returns a mapping from directories code can be contained in to the
+// determineRootDirs returns a mapping from absolute directories that could
-// corresponding import path prefixes of those directories.
+// contain code to their corresponding import path prefixes.
-// Its result is used to try to determine the import path for a package containing
+func (state *golistState) determineRootDirs() (map[string]string, error) {
-// an overlay file.
+	env, err := state.getEnv()
-func determineRootDirs(cfg *Config) map[string]string {
-	// Assume modules first:
-	out, err := invokeGo(cfg, "list", "-m", "-json", "all")
 	if err != nil {
-		return determineRootDirsGOPATH(cfg)
+		return nil, err
+	}
+	if env["GOMOD"] != "" {
+		state.rootsOnce.Do(func() {
+			state.rootDirs, state.rootDirsError = state.determineRootDirsModules()
+		})
+	} else {
+		state.rootsOnce.Do(func() {
+			state.rootDirs, state.rootDirsError = state.determineRootDirsGOPATH()
+		})
+	}
+	return state.rootDirs, state.rootDirsError
+}
+
+func (state *golistState) determineRootDirsModules() (map[string]string, error) {
+	out, err := state.invokeGo("list", "-m", "-json", "all")
+	if err != nil {
+		return nil, err
 	}
 	m := map[string]string{}
 	type jsonMod struct{ Path, Dir string }
 	for dec := json.NewDecoder(out); dec.More(); {
 		mod := new(jsonMod)
 		if err := dec.Decode(mod); err != nil {
-			return m // Give up and return an empty map. Package won't be found for overlay.
+			return nil, err
 		}
 		if mod.Dir != "" && mod.Path != "" {
 			// This is a valid module; add it to the map.
-			m[mod.Dir] = mod.Path
+			absDir, err := filepath.Abs(mod.Dir)
+			if err != nil {
+				return nil, err
+			}
+			m[absDir] = mod.Path
 		}
 	}
-	return m
+	return m, nil
 }
 
-func determineRootDirsGOPATH(cfg *Config) map[string]string {
+func (state *golistState) determineRootDirsGOPATH() (map[string]string, error) {
 	m := map[string]string{}
-	out, err := invokeGo(cfg, "env", "GOPATH")
+	for _, dir := range filepath.SplitList(state.mustGetEnv()["GOPATH"]) {
-	if err != nil {
+		absDir, err := filepath.Abs(dir)
-		// Could not determine root dir mapping. Everything is best-effort, so just return an empty map.
+		if err != nil {
-		// When we try to find the import path for a directory, there will be no root-dir match and
+			return nil, err
-		// we'll give up.
+		}
-		return m
+		m[filepath.Join(absDir, "src")] = ""
 	}
-	for _, p := range filepath.SplitList(string(bytes.TrimSpace(out.Bytes()))) {
+	return m, nil
-		m[filepath.Join(p, "src")] = ""
-	}
-	return m
 }
 
 func extractImports(filename string, contents []byte) ([]string, error) {

vendor/golang.org/x/tools/go/packages/packages.go

@@ -23,6 +23,7 @@ import (
 	"sync"
 
 	"golang.org/x/tools/go/gcexportdata"
+	"golang.org/x/tools/internal/packagesinternal"
 )
 
 // A LoadMode controls the amount of detail to return when loading.
@@ -34,6 +35,9 @@ import (
 // Load may return more information than requested.
 type LoadMode int
 
+// TODO(matloob): When a V2 of go/packages is released, rename NeedExportsFile to
+// NeedExportFile to make it consistent with the Package field it's adding.
+
 const (
 	// NeedName adds Name and PkgPath.
 	NeedName LoadMode = 1 << iota
@@ -51,7 +55,7 @@ const (
 	// NeedDeps adds the fields requested by the LoadMode in the packages in Imports.
 	NeedDeps
 
-	// NeedExportsFile adds ExportsFile.
+	// NeedExportsFile adds ExportFile.
 	NeedExportsFile
 
 	// NeedTypes adds Types, Fset, and IllTyped.
@@ -292,6 +296,15 @@ type Package struct {
 
 	// TypesSizes provides the effective size function for types in TypesInfo.
 	TypesSizes types.Sizes
+
+	// forTest is the package under test, if any.
+	forTest string
+}
+
+func init() {
+	packagesinternal.GetForTest = func(p interface{}) string {
+		return p.(*Package).forTest
+	}
 }
 
 // An Error describes a problem with a package's metadata, syntax, or types.
@@ -500,12 +513,23 @@ func (ld *loader) refine(roots []string, list ...*Package) ([]*Package, error) {
 		if i, found := rootMap[pkg.ID]; found {
 			rootIndex = i
 		}
+
+		// Overlays can invalidate export data.
+		// TODO(matloob): make this check fine-grained based on dependencies on overlaid files
+		exportDataInvalid := len(ld.Overlay) > 0 || pkg.ExportFile == "" && pkg.PkgPath != "unsafe"
+		// This package needs type information if the caller requested types and the package is
+		// either a root, or it's a non-root and the user requested dependencies ...
+		needtypes := (ld.Mode&NeedTypes|NeedTypesInfo != 0 && (rootIndex >= 0 || ld.Mode&NeedDeps != 0))
+		// This package needs source if the call requested source (or types info, which implies source)
+		// and the package is either a root, or itas a non- root and the user requested dependencies...
+		needsrc := ((ld.Mode&(NeedSyntax|NeedTypesInfo) != 0 && (rootIndex >= 0 || ld.Mode&NeedDeps != 0)) ||
+			// ... or if we need types and the exportData is invalid. We fall back to (incompletely)
+			// typechecking packages from source if they fail to compile.
+			(ld.Mode&NeedTypes|NeedTypesInfo != 0 && exportDataInvalid)) && pkg.PkgPath != "unsafe"
 		lpkg := &loaderPackage{
 			Package:   pkg,
-			needtypes: (ld.Mode&(NeedTypes|NeedTypesInfo) != 0 && ld.Mode&NeedDeps != 0 && rootIndex < 0) || rootIndex >= 0,
+			needtypes: needtypes,
-			needsrc: (ld.Mode&(NeedSyntax|NeedTypesInfo) != 0 && ld.Mode&NeedDeps != 0 && rootIndex < 0) || rootIndex >= 0 ||
+			needsrc:   needsrc,
-				len(ld.Overlay) > 0 || // Overlays can invalidate export data. TODO(matloob): make this check fine-grained based on dependencies on overlaid files
-				pkg.ExportFile == "" && pkg.PkgPath != "unsafe",
 		}
 		ld.pkgs[lpkg.ID] = lpkg
 		if rootIndex >= 0 {

vendor/golang.org/x/tools/internal/fastwalk/fastwalk.go

@@ -1,196 +0,0 @@
-// Copyright 2016 The Go Authors. All rights reserved.
-// Use of this source code is governed by a BSD-style
-// license that can be found in the LICENSE file.
-
-// Package fastwalk provides a faster version of filepath.Walk for file system
-// scanning tools.
-package fastwalk
-
-import (
-	"errors"
-	"os"
-	"path/filepath"
-	"runtime"
-	"sync"
-)
-
-// TraverseLink is used as a return value from WalkFuncs to indicate that the
-// symlink named in the call may be traversed.
-var TraverseLink = errors.New("fastwalk: traverse symlink, assuming target is a directory")
-
-// SkipFiles is a used as a return value from WalkFuncs to indicate that the
-// callback should not be called for any other files in the current directory.
-// Child directories will still be traversed.
-var SkipFiles = errors.New("fastwalk: skip remaining files in directory")
-
-// Walk is a faster implementation of filepath.Walk.
-//
-// filepath.Walk's design necessarily calls os.Lstat on each file,
-// even if the caller needs less info.
-// Many tools need only the type of each file.
-// On some platforms, this information is provided directly by the readdir
-// system call, avoiding the need to stat each file individually.
-// fastwalk_unix.go contains a fork of the syscall routines.
-//
-// See golang.org/issue/16399
-//
-// Walk walks the file tree rooted at root, calling walkFn for
-// each file or directory in the tree, including root.
-//
-// If fastWalk returns filepath.SkipDir, the directory is skipped.
-//
-// Unlike filepath.Walk:
-//   * file stat calls must be done by the user.
-//     The only provided metadata is the file type, which does not include
-//     any permission bits.
-//   * multiple goroutines stat the filesystem concurrently. The provided
-//     walkFn must be safe for concurrent use.
-//   * fastWalk can follow symlinks if walkFn returns the TraverseLink
-//     sentinel error. It is the walkFn's responsibility to prevent
-//     fastWalk from going into symlink cycles.
-func Walk(root string, walkFn func(path string, typ os.FileMode) error) error {
-	// TODO(bradfitz): make numWorkers configurable? We used a
-	// minimum of 4 to give the kernel more info about multiple
-	// things we want, in hopes its I/O scheduling can take
-	// advantage of that. Hopefully most are in cache. Maybe 4 is
-	// even too low of a minimum. Profile more.
-	numWorkers := 4
-	if n := runtime.NumCPU(); n > numWorkers {
-		numWorkers = n
-	}
-
-	// Make sure to wait for all workers to finish, otherwise
-	// walkFn could still be called after returning. This Wait call
-	// runs after close(e.donec) below.
-	var wg sync.WaitGroup
-	defer wg.Wait()
-
-	w := &walker{
-		fn:       walkFn,
-		enqueuec: make(chan walkItem, numWorkers), // buffered for performance
-		workc:    make(chan walkItem, numWorkers), // buffered for performance
-		donec:    make(chan struct{}),
-
-		// buffered for correctness & not leaking goroutines:
-		resc: make(chan error, numWorkers),
-	}
-	defer close(w.donec)
-
-	for i := 0; i < numWorkers; i++ {
-		wg.Add(1)
-		go w.doWork(&wg)
-	}
-	todo := []walkItem{{dir: root}}
-	out := 0
-	for {
-		workc := w.workc
-		var workItem walkItem
-		if len(todo) == 0 {
-			workc = nil
-		} else {
-			workItem = todo[len(todo)-1]
-		}
-		select {
-		case workc <- workItem:
-			todo = todo[:len(todo)-1]
-			out++
-		case it := <-w.enqueuec:
-			todo = append(todo, it)
-		case err := <-w.resc:
-			out--
-			if err != nil {
-				return err
-			}
-			if out == 0 && len(todo) == 0 {
-				// It's safe to quit here, as long as the buffered
-				// enqueue channel isn't also readable, which might
-				// happen if the worker sends both another unit of
-				// work and its result before the other select was
-				// scheduled and both w.resc and w.enqueuec were
-				// readable.
-				select {
-				case it := <-w.enqueuec:
-					todo = append(todo, it)
-				default:
-					return nil
-				}
-			}
-		}
-	}
-}
-
-// doWork reads directories as instructed (via workc) and runs the
-// user's callback function.
-func (w *walker) doWork(wg *sync.WaitGroup) {
-	defer wg.Done()
-	for {
-		select {
-		case <-w.donec:
-			return
-		case it := <-w.workc:
-			select {
-			case <-w.donec:
-				return
-			case w.resc <- w.walk(it.dir, !it.callbackDone):
-			}
-		}
-	}
-}
-
-type walker struct {
-	fn func(path string, typ os.FileMode) error
-
-	donec    chan struct{} // closed on fastWalk's return
-	workc    chan walkItem // to workers
-	enqueuec chan walkItem // from workers
-	resc     chan error    // from workers
-}
-
-type walkItem struct {
-	dir          string
-	callbackDone bool // callback already called; don't do it again
-}
-
-func (w *walker) enqueue(it walkItem) {
-	select {
-	case w.enqueuec <- it:
-	case <-w.donec:
-	}
-}
-
-func (w *walker) onDirEnt(dirName, baseName string, typ os.FileMode) error {
-	joined := dirName + string(os.PathSeparator) + baseName
-	if typ == os.ModeDir {
-		w.enqueue(walkItem{dir: joined})
-		return nil
-	}
-
-	err := w.fn(joined, typ)
-	if typ == os.ModeSymlink {
-		if err == TraverseLink {
-			// Set callbackDone so we don't call it twice for both the
-			// symlink-as-symlink and the symlink-as-directory later:
-			w.enqueue(walkItem{dir: joined, callbackDone: true})
-			return nil
-		}
-		if err == filepath.SkipDir {
-			// Permit SkipDir on symlinks too.
-			return nil
-		}
-	}
-	return err
-}
-
-func (w *walker) walk(root string, runUserCallback bool) error {
-	if runUserCallback {
-		err := w.fn(root, os.ModeDir)
-		if err == filepath.SkipDir {
-			return nil
-		}
-		if err != nil {
-			return err
-		}
-	}
-
-	return readDir(root, w.onDirEnt)
-}

vendor/golang.org/x/tools/internal/fastwalk/fastwalk_dirent_fileno.go

@@ -1,13 +0,0 @@
-// Copyright 2016 The Go Authors. All rights reserved.
-// Use of this source code is governed by a BSD-style
-// license that can be found in the LICENSE file.
-
-// +build freebsd openbsd netbsd
-
-package fastwalk
-
-import "syscall"
-
-func direntInode(dirent *syscall.Dirent) uint64 {
-	return uint64(dirent.Fileno)
-}

vendor/golang.org/x/tools/internal/fastwalk/fastwalk_dirent_ino.go

@@ -1,14 +0,0 @@
-// Copyright 2016 The Go Authors. All rights reserved.
-// Use of this source code is governed by a BSD-style
-// license that can be found in the LICENSE file.
-
-// +build linux darwin
-// +build !appengine
-
-package fastwalk
-
-import "syscall"
-
-func direntInode(dirent *syscall.Dirent) uint64 {
-	return uint64(dirent.Ino)
-}

vendor/golang.org/x/tools/internal/fastwalk/fastwalk_dirent_namlen_bsd.go

@@ -1,13 +0,0 @@
-// Copyright 2018 The Go Authors. All rights reserved.
-// Use of this source code is governed by a BSD-style
-// license that can be found in the LICENSE file.
-
-// +build darwin freebsd openbsd netbsd
-
-package fastwalk
-
-import "syscall"
-
-func direntNamlen(dirent *syscall.Dirent) uint64 {
-	return uint64(dirent.Namlen)
-}

vendor/golang.org/x/tools/internal/fastwalk/fastwalk_dirent_namlen_linux.go

@@ -1,29 +0,0 @@
-// Copyright 2018 The Go Authors. All rights reserved.
-// Use of this source code is governed by a BSD-style
-// license that can be found in the LICENSE file.
-
-// +build linux
-// +build !appengine
-
-package fastwalk
-
-import (
-	"bytes"
-	"syscall"
-	"unsafe"
-)
-
-func direntNamlen(dirent *syscall.Dirent) uint64 {
-	const fixedHdr = uint16(unsafe.Offsetof(syscall.Dirent{}.Name))
-	nameBuf := (*[unsafe.Sizeof(dirent.Name)]byte)(unsafe.Pointer(&dirent.Name[0]))
-	const nameBufLen = uint16(len(nameBuf))
-	limit := dirent.Reclen - fixedHdr
-	if limit > nameBufLen {
-		limit = nameBufLen
-	}
-	nameLen := bytes.IndexByte(nameBuf[:limit], 0)
-	if nameLen < 0 {
-		panic("failed to find terminating 0 byte in dirent")
-	}
-	return uint64(nameLen)
-}

vendor/golang.org/x/tools/internal/fastwalk/fastwalk_portable.go

@@ -1,37 +0,0 @@
-// Copyright 2016 The Go Authors. All rights reserved.
-// Use of this source code is governed by a BSD-style
-// license that can be found in the LICENSE file.
-
-// +build appengine !linux,!darwin,!freebsd,!openbsd,!netbsd
-
-package fastwalk
-
-import (
-	"io/ioutil"
-	"os"
-)
-
-// readDir calls fn for each directory entry in dirName.
-// It does not descend into directories or follow symlinks.
-// If fn returns a non-nil error, readDir returns with that error
-// immediately.
-func readDir(dirName string, fn func(dirName, entName string, typ os.FileMode) error) error {
-	fis, err := ioutil.ReadDir(dirName)
-	if err != nil {
-		return err
-	}
-	skipFiles := false
-	for _, fi := range fis {
-		if fi.Mode().IsRegular() && skipFiles {
-			continue
-		}
-		if err := fn(dirName, fi.Name(), fi.Mode()&os.ModeType); err != nil {
-			if err == SkipFiles {
-				skipFiles = true
-				continue
-			}
-			return err
-		}
-	}
-	return nil
-}

vendor/golang.org/x/tools/internal/fastwalk/fastwalk_unix.go

@@ -1,127 +0,0 @@
-// Copyright 2016 The Go Authors. All rights reserved.
-// Use of this source code is governed by a BSD-style
-// license that can be found in the LICENSE file.
-
-// +build linux darwin freebsd openbsd netbsd
-// +build !appengine
-
-package fastwalk
-
-import (
-	"fmt"
-	"os"
-	"syscall"
-	"unsafe"
-)
-
-const blockSize = 8 << 10
-
-// unknownFileMode is a sentinel (and bogus) os.FileMode
-// value used to represent a syscall.DT_UNKNOWN Dirent.Type.
-const unknownFileMode os.FileMode = os.ModeNamedPipe | os.ModeSocket | os.ModeDevice
-
-func readDir(dirName string, fn func(dirName, entName string, typ os.FileMode) error) error {
-	fd, err := syscall.Open(dirName, 0, 0)
-	if err != nil {
-		return &os.PathError{Op: "open", Path: dirName, Err: err}
-	}
-	defer syscall.Close(fd)
-
-	// The buffer must be at least a block long.
-	buf := make([]byte, blockSize) // stack-allocated; doesn't escape
-	bufp := 0                      // starting read position in buf
-	nbuf := 0                      // end valid data in buf
-	skipFiles := false
-	for {
-		if bufp >= nbuf {
-			bufp = 0
-			nbuf, err = syscall.ReadDirent(fd, buf)
-			if err != nil {
-				return os.NewSyscallError("readdirent", err)
-			}
-			if nbuf <= 0 {
-				return nil
-			}
-		}
-		consumed, name, typ := parseDirEnt(buf[bufp:nbuf])
-		bufp += consumed
-		if name == "" || name == "." || name == ".." {
-			continue
-		}
-		// Fallback for filesystems (like old XFS) that don't
-		// support Dirent.Type and have DT_UNKNOWN (0) there
-		// instead.
-		if typ == unknownFileMode {
-			fi, err := os.Lstat(dirName + "/" + name)
-			if err != nil {
-				// It got deleted in the meantime.
-				if os.IsNotExist(err) {
-					continue
-				}
-				return err
-			}
-			typ = fi.Mode() & os.ModeType
-		}
-		if skipFiles && typ.IsRegular() {
-			continue
-		}
-		if err := fn(dirName, name, typ); err != nil {
-			if err == SkipFiles {
-				skipFiles = true
-				continue
-			}
-			return err
-		}
-	}
-}
-
-func parseDirEnt(buf []byte) (consumed int, name string, typ os.FileMode) {
-	// golang.org/issue/15653
-	dirent := (*syscall.Dirent)(unsafe.Pointer(&buf[0]))
-	if v := unsafe.Offsetof(dirent.Reclen) + unsafe.Sizeof(dirent.Reclen); uintptr(len(buf)) < v {
-		panic(fmt.Sprintf("buf size of %d smaller than dirent header size %d", len(buf), v))
-	}
-	if len(buf) < int(dirent.Reclen) {
-		panic(fmt.Sprintf("buf size %d < record length %d", len(buf), dirent.Reclen))
-	}
-	consumed = int(dirent.Reclen)
-	if direntInode(dirent) == 0 { // File absent in directory.
-		return
-	}
-	switch dirent.Type {
-	case syscall.DT_REG:
-		typ = 0
-	case syscall.DT_DIR:
-		typ = os.ModeDir
-	case syscall.DT_LNK:
-		typ = os.ModeSymlink
-	case syscall.DT_BLK:
-		typ = os.ModeDevice
-	case syscall.DT_FIFO:
-		typ = os.ModeNamedPipe
-	case syscall.DT_SOCK:
-		typ = os.ModeSocket
-	case syscall.DT_UNKNOWN:
-		typ = unknownFileMode
-	default:
-		// Skip weird things.
-		// It's probably a DT_WHT (http://lwn.net/Articles/325369/)
-		// or something. Revisit if/when this package is moved outside
-		// of goimports. goimports only cares about regular files,
-		// symlinks, and directories.
-		return
-	}
-
-	nameBuf := (*[unsafe.Sizeof(dirent.Name)]byte)(unsafe.Pointer(&dirent.Name[0]))
-	nameLen := direntNamlen(dirent)
-
-	// Special cases for common things:
-	if nameLen == 1 && nameBuf[0] == '.' {
-		name = "."
-	} else if nameLen == 2 && nameBuf[0] == '.' && nameBuf[1] == '.' {
-		name = ".."
-	} else {
-		name = string(nameBuf[:nameLen])
-	}
-	return
-}

vendor/golang.org/x/tools/internal/gopathwalk/walk.go

@@ -1,273 +0,0 @@
-// Copyright 2018 The Go Authors. All rights reserved.
-// Use of this source code is governed by a BSD-style
-// license that can be found in the LICENSE file.
-
-// Package gopathwalk is like filepath.Walk but specialized for finding Go
-// packages, particularly in $GOPATH and $GOROOT.
-package gopathwalk
-
-import (
-	"bufio"
-	"bytes"
-	"fmt"
-	"go/build"
-	"io/ioutil"
-	"log"
-	"os"
-	"path/filepath"
-	"strings"
-	"time"
-
-	"golang.org/x/tools/internal/fastwalk"
-)
-
-// Options controls the behavior of a Walk call.
-type Options struct {
-	Debug          bool // Enable debug logging
-	ModulesEnabled bool // Search module caches. Also disables legacy goimports ignore rules.
-}
-
-// RootType indicates the type of a Root.
-type RootType int
-
-const (
-	RootUnknown RootType = iota
-	RootGOROOT
-	RootGOPATH
-	RootCurrentModule
-	RootModuleCache
-	RootOther
-)
-
-// A Root is a starting point for a Walk.
-type Root struct {
-	Path string
-	Type RootType
-}
-
-// SrcDirsRoots returns the roots from build.Default.SrcDirs(). Not modules-compatible.
-func SrcDirsRoots(ctx *build.Context) []Root {
-	var roots []Root
-	roots = append(roots, Root{filepath.Join(ctx.GOROOT, "src"), RootGOROOT})
-	for _, p := range filepath.SplitList(ctx.GOPATH) {
-		roots = append(roots, Root{filepath.Join(p, "src"), RootGOPATH})
-	}
-	return roots
-}
-
-// Walk walks Go source directories ($GOROOT, $GOPATH, etc) to find packages.
-// For each package found, add will be called (concurrently) with the absolute
-// paths of the containing source directory and the package directory.
-// add will be called concurrently.
-func Walk(roots []Root, add func(root Root, dir string), opts Options) {
-	WalkSkip(roots, add, func(Root, string) bool { return false }, opts)
-}
-
-// WalkSkip walks Go source directories ($GOROOT, $GOPATH, etc) to find packages.
-// For each package found, add will be called (concurrently) with the absolute
-// paths of the containing source directory and the package directory.
-// For each directory that will be scanned, skip will be called (concurrently)
-// with the absolute paths of the containing source directory and the directory.
-// If skip returns false on a directory it will be processed.
-// add will be called concurrently.
-// skip will be called concurrently.
-func WalkSkip(roots []Root, add func(root Root, dir string), skip func(root Root, dir string) bool, opts Options) {
-	for _, root := range roots {
-		walkDir(root, add, skip, opts)
-	}
-}
-
-// walkDir creates a walker and starts fastwalk with this walker.
-func walkDir(root Root, add func(Root, string), skip func(root Root, dir string) bool, opts Options) {
-	if _, err := os.Stat(root.Path); os.IsNotExist(err) {
-		if opts.Debug {
-			log.Printf("skipping nonexistent directory: %v", root.Path)
-		}
-		return
-	}
-	start := time.Now()
-	if opts.Debug {
-		log.Printf("gopathwalk: scanning %s", root.Path)
-	}
-	w := &walker{
-		root: root,
-		add:  add,
-		skip: skip,
-		opts: opts,
-	}
-	w.init()
-	if err := fastwalk.Walk(root.Path, w.walk); err != nil {
-		log.Printf("gopathwalk: scanning directory %v: %v", root.Path, err)
-	}
-
-	if opts.Debug {
-		log.Printf("gopathwalk: scanned %s in %v", root.Path, time.Since(start))
-	}
-}
-
-// walker is the callback for fastwalk.Walk.
-type walker struct {
-	root Root                    // The source directory to scan.
-	add  func(Root, string)      // The callback that will be invoked for every possible Go package dir.
-	skip func(Root, string) bool // The callback that will be invoked for every dir. dir is skipped if it returns true.
-	opts Options                 // Options passed to Walk by the user.
-
-	ignoredDirs []os.FileInfo // The ignored directories, loaded from .goimportsignore files.
-}
-
-// init initializes the walker based on its Options
-func (w *walker) init() {
-	var ignoredPaths []string
-	if w.root.Type == RootModuleCache {
-		ignoredPaths = []string{"cache"}
-	}
-	if !w.opts.ModulesEnabled && w.root.Type == RootGOPATH {
-		ignoredPaths = w.getIgnoredDirs(w.root.Path)
-		ignoredPaths = append(ignoredPaths, "v", "mod")
-	}
-
-	for _, p := range ignoredPaths {
-		full := filepath.Join(w.root.Path, p)
-		if fi, err := os.Stat(full); err == nil {
-			w.ignoredDirs = append(w.ignoredDirs, fi)
-			if w.opts.Debug {
-				log.Printf("Directory added to ignore list: %s", full)
-			}
-		} else if w.opts.Debug {
-			log.Printf("Error statting ignored directory: %v", err)
-		}
-	}
-}
-
-// getIgnoredDirs reads an optional config file at <path>/.goimportsignore
-// of relative directories to ignore when scanning for go files.
-// The provided path is one of the $GOPATH entries with "src" appended.
-func (w *walker) getIgnoredDirs(path string) []string {
-	file := filepath.Join(path, ".goimportsignore")
-	slurp, err := ioutil.ReadFile(file)
-	if w.opts.Debug {
-		if err != nil {
-			log.Print(err)
-		} else {
-			log.Printf("Read %s", file)
-		}
-	}
-	if err != nil {
-		return nil
-	}
-
-	var ignoredDirs []string
-	bs := bufio.NewScanner(bytes.NewReader(slurp))
-	for bs.Scan() {
-		line := strings.TrimSpace(bs.Text())
-		if line == "" || strings.HasPrefix(line, "#") {
-			continue
-		}
-		ignoredDirs = append(ignoredDirs, line)
-	}
-	return ignoredDirs
-}
-
-// shouldSkipDir reports whether the file should be skipped or not.
-func (w *walker) shouldSkipDir(fi os.FileInfo, dir string) bool {
-	for _, ignoredDir := range w.ignoredDirs {
-		if os.SameFile(fi, ignoredDir) {
-			return true
-		}
-	}
-	if w.skip != nil {
-		// Check with the user specified callback.
-		return w.skip(w.root, dir)
-	}
-	return false
-}
-
-// walk walks through the given path.
-func (w *walker) walk(path string, typ os.FileMode) error {
-	dir := filepath.Dir(path)
-	if typ.IsRegular() {
-		if dir == w.root.Path && (w.root.Type == RootGOROOT || w.root.Type == RootGOPATH) {
-			// Doesn't make sense to have regular files
-			// directly in your $GOPATH/src or $GOROOT/src.
-			return fastwalk.SkipFiles
-		}
-		if !strings.HasSuffix(path, ".go") {
-			return nil
-		}
-
-		w.add(w.root, dir)
-		return fastwalk.SkipFiles
-	}
-	if typ == os.ModeDir {
-		base := filepath.Base(path)
-		if base == "" || base[0] == '.' || base[0] == '_' ||
-			base == "testdata" ||
-			(w.root.Type == RootGOROOT && w.opts.ModulesEnabled && base == "vendor") ||
-			(!w.opts.ModulesEnabled && base == "node_modules") {
-			return filepath.SkipDir
-		}
-		fi, err := os.Lstat(path)
-		if err == nil && w.shouldSkipDir(fi, path) {
-			return filepath.SkipDir
-		}
-		return nil
-	}
-	if typ == os.ModeSymlink {
-		base := filepath.Base(path)
-		if strings.HasPrefix(base, ".#") {
-			// Emacs noise.
-			return nil
-		}
-		fi, err := os.Lstat(path)
-		if err != nil {
-			// Just ignore it.
-			return nil
-		}
-		if w.shouldTraverse(dir, fi) {
-			return fastwalk.TraverseLink
-		}
-	}
-	return nil
-}
-
-// shouldTraverse reports whether the symlink fi, found in dir,
-// should be followed.  It makes sure symlinks were never visited
-// before to avoid symlink loops.
-func (w *walker) shouldTraverse(dir string, fi os.FileInfo) bool {
-	path := filepath.Join(dir, fi.Name())
-	target, err := filepath.EvalSymlinks(path)
-	if err != nil {
-		return false
-	}
-	ts, err := os.Stat(target)
-	if err != nil {
-		fmt.Fprintln(os.Stderr, err)
-		return false
-	}
-	if !ts.IsDir() {
-		return false
-	}
-	if w.shouldSkipDir(ts, dir) {
-		return false
-	}
-	// Check for symlink loops by statting each directory component
-	// and seeing if any are the same file as ts.
-	for {
-		parent := filepath.Dir(path)
-		if parent == path {
-			// Made it to the root without seeing a cycle.
-			// Use this symlink.
-			return true
-		}
-		parentInfo, err := os.Stat(parent)
-		if err != nil {
-			return false
-		}
-		if os.SameFile(ts, parentInfo) {
-			// Cycle. Don't traverse.
-			return false
-		}
-		path = parent
-	}
-
-}

vendor/golang.org/x/tools/internal/packagesinternal/packages.go

@@ -0,0 +1,4 @@
+// Package packagesinternal exposes internal-only fields from go/packages.
+package packagesinternal
+
+var GetForTest = func(p interface{}) string { return "" }

vendor/golang.org/x/tools/internal/semver/semver.go

@@ -1,388 +0,0 @@
-// Copyright 2018 The Go Authors. All rights reserved.
-// Use of this source code is governed by a BSD-style
-// license that can be found in the LICENSE file.
-
-// Package semver implements comparison of semantic version strings.
-// In this package, semantic version strings must begin with a leading "v",
-// as in "v1.0.0".
-//
-// The general form of a semantic version string accepted by this package is
-//
-//	vMAJOR[.MINOR[.PATCH[-PRERELEASE][+BUILD]]]
-//
-// where square brackets indicate optional parts of the syntax;
-// MAJOR, MINOR, and PATCH are decimal integers without extra leading zeros;
-// PRERELEASE and BUILD are each a series of non-empty dot-separated identifiers
-// using only alphanumeric characters and hyphens; and
-// all-numeric PRERELEASE identifiers must not have leading zeros.
-//
-// This package follows Semantic Versioning 2.0.0 (see semver.org)
-// with two exceptions. First, it requires the "v" prefix. Second, it recognizes
-// vMAJOR and vMAJOR.MINOR (with no prerelease or build suffixes)
-// as shorthands for vMAJOR.0.0 and vMAJOR.MINOR.0.
-package semver
-
-// parsed returns the parsed form of a semantic version string.
-type parsed struct {
-	major      string
-	minor      string
-	patch      string
-	short      string
-	prerelease string
-	build      string
-	err        string
-}
-
-// IsValid reports whether v is a valid semantic version string.
-func IsValid(v string) bool {
-	_, ok := parse(v)
-	return ok
-}
-
-// Canonical returns the canonical formatting of the semantic version v.
-// It fills in any missing .MINOR or .PATCH and discards build metadata.
-// Two semantic versions compare equal only if their canonical formattings
-// are identical strings.
-// The canonical invalid semantic version is the empty string.
-func Canonical(v string) string {
-	p, ok := parse(v)
-	if !ok {
-		return ""
-	}
-	if p.build != "" {
-		return v[:len(v)-len(p.build)]
-	}
-	if p.short != "" {
-		return v + p.short
-	}
-	return v
-}
-
-// Major returns the major version prefix of the semantic version v.
-// For example, Major("v2.1.0") == "v2".
-// If v is an invalid semantic version string, Major returns the empty string.
-func Major(v string) string {
-	pv, ok := parse(v)
-	if !ok {
-		return ""
-	}
-	return v[:1+len(pv.major)]
-}
-
-// MajorMinor returns the major.minor version prefix of the semantic version v.
-// For example, MajorMinor("v2.1.0") == "v2.1".
-// If v is an invalid semantic version string, MajorMinor returns the empty string.
-func MajorMinor(v string) string {
-	pv, ok := parse(v)
-	if !ok {
-		return ""
-	}
-	i := 1 + len(pv.major)
-	if j := i + 1 + len(pv.minor); j <= len(v) && v[i] == '.' && v[i+1:j] == pv.minor {
-		return v[:j]
-	}
-	return v[:i] + "." + pv.minor
-}
-
-// Prerelease returns the prerelease suffix of the semantic version v.
-// For example, Prerelease("v2.1.0-pre+meta") == "-pre".
-// If v is an invalid semantic version string, Prerelease returns the empty string.
-func Prerelease(v string) string {
-	pv, ok := parse(v)
-	if !ok {
-		return ""
-	}
-	return pv.prerelease
-}
-
-// Build returns the build suffix of the semantic version v.
-// For example, Build("v2.1.0+meta") == "+meta".
-// If v is an invalid semantic version string, Build returns the empty string.
-func Build(v string) string {
-	pv, ok := parse(v)
-	if !ok {
-		return ""
-	}
-	return pv.build
-}
-
-// Compare returns an integer comparing two versions according to
-// according to semantic version precedence.
-// The result will be 0 if v == w, -1 if v < w, or +1 if v > w.
-//
-// An invalid semantic version string is considered less than a valid one.
-// All invalid semantic version strings compare equal to each other.
-func Compare(v, w string) int {
-	pv, ok1 := parse(v)
-	pw, ok2 := parse(w)
-	if !ok1 && !ok2 {
-		return 0
-	}
-	if !ok1 {
-		return -1
-	}
-	if !ok2 {
-		return +1
-	}
-	if c := compareInt(pv.major, pw.major); c != 0 {
-		return c
-	}
-	if c := compareInt(pv.minor, pw.minor); c != 0 {
-		return c
-	}
-	if c := compareInt(pv.patch, pw.patch); c != 0 {
-		return c
-	}
-	return comparePrerelease(pv.prerelease, pw.prerelease)
-}
-
-// Max canonicalizes its arguments and then returns the version string
-// that compares greater.
-func Max(v, w string) string {
-	v = Canonical(v)
-	w = Canonical(w)
-	if Compare(v, w) > 0 {
-		return v
-	}
-	return w
-}
-
-func parse(v string) (p parsed, ok bool) {
-	if v == "" || v[0] != 'v' {
-		p.err = "missing v prefix"
-		return
-	}
-	p.major, v, ok = parseInt(v[1:])
-	if !ok {
-		p.err = "bad major version"
-		return
-	}
-	if v == "" {
-		p.minor = "0"
-		p.patch = "0"
-		p.short = ".0.0"
-		return
-	}
-	if v[0] != '.' {
-		p.err = "bad minor prefix"
-		ok = false
-		return
-	}
-	p.minor, v, ok = parseInt(v[1:])
-	if !ok {
-		p.err = "bad minor version"
-		return
-	}
-	if v == "" {
-		p.patch = "0"
-		p.short = ".0"
-		return
-	}
-	if v[0] != '.' {
-		p.err = "bad patch prefix"
-		ok = false
-		return
-	}
-	p.patch, v, ok = parseInt(v[1:])
-	if !ok {
-		p.err = "bad patch version"
-		return
-	}
-	if len(v) > 0 && v[0] == '-' {
-		p.prerelease, v, ok = parsePrerelease(v)
-		if !ok {
-			p.err = "bad prerelease"
-			return
-		}
-	}
-	if len(v) > 0 && v[0] == '+' {
-		p.build, v, ok = parseBuild(v)
-		if !ok {
-			p.err = "bad build"
-			return
-		}
-	}
-	if v != "" {
-		p.err = "junk on end"
-		ok = false
-		return
-	}
-	ok = true
-	return
-}
-
-func parseInt(v string) (t, rest string, ok bool) {
-	if v == "" {
-		return
-	}
-	if v[0] < '0' || '9' < v[0] {
-		return
-	}
-	i := 1
-	for i < len(v) && '0' <= v[i] && v[i] <= '9' {
-		i++
-	}
-	if v[0] == '0' && i != 1 {
-		return
-	}
-	return v[:i], v[i:], true
-}
-
-func parsePrerelease(v string) (t, rest string, ok bool) {
-	// "A pre-release version MAY be denoted by appending a hyphen and
-	// a series of dot separated identifiers immediately following the patch version.
-	// Identifiers MUST comprise only ASCII alphanumerics and hyphen [0-9A-Za-z-].
-	// Identifiers MUST NOT be empty. Numeric identifiers MUST NOT include leading zeroes."
-	if v == "" || v[0] != '-' {
-		return
-	}
-	i := 1
-	start := 1
-	for i < len(v) && v[i] != '+' {
-		if !isIdentChar(v[i]) && v[i] != '.' {
-			return
-		}
-		if v[i] == '.' {
-			if start == i || isBadNum(v[start:i]) {
-				return
-			}
-			start = i + 1
-		}
-		i++
-	}
-	if start == i || isBadNum(v[start:i]) {
-		return
-	}
-	return v[:i], v[i:], true
-}
-
-func parseBuild(v string) (t, rest string, ok bool) {
-	if v == "" || v[0] != '+' {
-		return
-	}
-	i := 1
-	start := 1
-	for i < len(v) {
-		if !isIdentChar(v[i]) {
-			return
-		}
-		if v[i] == '.' {
-			if start == i {
-				return
-			}
-			start = i + 1
-		}
-		i++
-	}
-	if start == i {
-		return
-	}
-	return v[:i], v[i:], true
-}
-
-func isIdentChar(c byte) bool {
-	return 'A' <= c && c <= 'Z' || 'a' <= c && c <= 'z' || '0' <= c && c <= '9' || c == '-'
-}
-
-func isBadNum(v string) bool {
-	i := 0
-	for i < len(v) && '0' <= v[i] && v[i] <= '9' {
-		i++
-	}
-	return i == len(v) && i > 1 && v[0] == '0'
-}
-
-func isNum(v string) bool {
-	i := 0
-	for i < len(v) && '0' <= v[i] && v[i] <= '9' {
-		i++
-	}
-	return i == len(v)
-}
-
-func compareInt(x, y string) int {
-	if x == y {
-		return 0
-	}
-	if len(x) < len(y) {
-		return -1
-	}
-	if len(x) > len(y) {
-		return +1
-	}
-	if x < y {
-		return -1
-	} else {
-		return +1
-	}
-}
-
-func comparePrerelease(x, y string) int {
-	// "When major, minor, and patch are equal, a pre-release version has
-	// lower precedence than a normal version.
-	// Example: 1.0.0-alpha < 1.0.0.
-	// Precedence for two pre-release versions with the same major, minor,
-	// and patch version MUST be determined by comparing each dot separated
-	// identifier from left to right until a difference is found as follows:
-	// identifiers consisting of only digits are compared numerically and
-	// identifiers with letters or hyphens are compared lexically in ASCII
-	// sort order. Numeric identifiers always have lower precedence than
-	// non-numeric identifiers. A larger set of pre-release fields has a
-	// higher precedence than a smaller set, if all of the preceding
-	// identifiers are equal.
-	// Example: 1.0.0-alpha < 1.0.0-alpha.1 < 1.0.0-alpha.beta <
-	// 1.0.0-beta < 1.0.0-beta.2 < 1.0.0-beta.11 < 1.0.0-rc.1 < 1.0.0."
-	if x == y {
-		return 0
-	}
-	if x == "" {
-		return +1
-	}
-	if y == "" {
-		return -1
-	}
-	for x != "" && y != "" {
-		x = x[1:] // skip - or .
-		y = y[1:] // skip - or .
-		var dx, dy string
-		dx, x = nextIdent(x)
-		dy, y = nextIdent(y)
-		if dx != dy {
-			ix := isNum(dx)
-			iy := isNum(dy)
-			if ix != iy {
-				if ix {
-					return -1
-				} else {
-					return +1
-				}
-			}
-			if ix {
-				if len(dx) < len(dy) {
-					return -1
-				}
-				if len(dx) > len(dy) {
-					return +1
-				}
-			}
-			if dx < dy {
-				return -1
-			} else {
-				return +1
-			}
-		}
-	}
-	if x == "" {
-		return -1
-	} else {
-		return +1
-	}
-}
-
-func nextIdent(x string) (dx, rest string) {
-	i := 0
-	for i < len(x) && x[i] != '.' {
-		i++
-	}
-	return x[:i], x[i:]
-}

vendor/modules.txt

@@ -135,10 +135,6 @@ github.com/golang/protobuf/proto
 github.com/golang/protobuf/protoc-gen-go/descriptor
 # github.com/golang/snappy v0.0.1
 github.com/golang/snappy
-# github.com/gomarkdown/markdown v0.0.0-20191209105822-e3ba6c6109ba => github.com/status-im/markdown v0.0.0-20191209105822-e3ba6c6109ba
-github.com/gomarkdown/markdown
-github.com/gomarkdown/markdown/ast
-github.com/gomarkdown/markdown/parser
 # github.com/google/uuid v1.1.1
 github.com/google/uuid
 # github.com/gorilla/websocket v1.4.1
@@ -362,6 +358,10 @@ github.com/status-im/doubleratchet
 github.com/status-im/go-multiaddr-ethv4
 # github.com/status-im/keycard-go v0.0.0-20200107115650-f38e9a19958e
 github.com/status-im/keycard-go/derivationpath
+# github.com/status-im/markdown v0.0.0-20200210164614-b9fe92168122
+github.com/status-im/markdown
+github.com/status-im/markdown/ast
+github.com/status-im/markdown/parser
 # github.com/status-im/migrate/v4 v4.6.2-status.2
 github.com/status-im/migrate/v4
 github.com/status-im/migrate/v4/database/postgres
@@ -515,7 +515,7 @@ golang.org/x/text/secure/bidirule
 golang.org/x/text/transform
 golang.org/x/text/unicode/bidi
 golang.org/x/text/unicode/norm
-# golang.org/x/tools v0.0.0-20200116062425-473961ec044c
+# golang.org/x/tools v0.0.0-20200211045251-2de505fc5306
 golang.org/x/tools/go/analysis
 golang.org/x/tools/go/analysis/passes/inspect
 golang.org/x/tools/go/ast/astutil
@@ -527,9 +527,7 @@ golang.org/x/tools/go/internal/packagesdriver
 golang.org/x/tools/go/packages
 golang.org/x/tools/go/types/objectpath
 golang.org/x/tools/go/types/typeutil
-golang.org/x/tools/internal/fastwalk
+golang.org/x/tools/internal/packagesinternal
-golang.org/x/tools/internal/gopathwalk
-golang.org/x/tools/internal/semver
 # gopkg.in/go-playground/validator.v9 v9.31.0
 gopkg.in/go-playground/validator.v9
 # gopkg.in/natefinch/lumberjack.v2 v2.0.0