no tmux checking code seems necessary. see #145.

lib/program.js

@@ -14,8 +14,6 @@ var EventEmitter = require('events').EventEmitter
   , util = require('util')
   , fs = require('fs');
 
-// cp = { __proto__: cp, execFileSync: null };
-
 var Tput = require('./tput')
   , colors = require('./colors')
   , slice = Array.prototype.slice;
@@ -94,6 +92,16 @@ function Program(options) {
 
   this.isTMUX = this.term('screen') && !!process.env.TMUX;
 
+  this.tmuxVersion = (function() {
+    if (!process.env.TMUX) return 2;
+    try {
+      version = cp.execFileSync('tmux', ['-V'], { encoding: 'utf8' });
+      return +version.trim().split(/\s+/).pop() || 2;
+    } catch (e) {
+      return 2;
+    }
+  })();
+
   this._buf = '';
   this._flush = this.flush.bind(this);
 
@@ -110,8 +118,6 @@ function Program(options) {
     Program.global = this;
   }
 
-  this.tmux.check();
-
   if (options.tput !== false) {
     this.setupTput();
   }
@@ -3079,85 +3085,6 @@ Program.prototype.normalBuffer = function() {
   return this.resetMode('?1049');
 };
 
-Program.prototype.tmux = {
-  used: !!process.env.TMUX,
-
-  check: function() {
-    var self = this;
-    if (!this.used) return;
-    if (cp.execFileSync) return;
-    self._tmuxLoading = 2;
-    cp.execFile('tmux', ['-V'], function(err, stdout, stderr) {
-      self._tmuxLoading--;
-      if (err || (stderr && stderr.trim())) return;
-      self._version = +(stdout || '1').trim().split(/\s+/).pop() || 1;
-    });
-    cp.execFile('tmux', ['list-panes'], function(err, stdout, stderr) {
-      self._tmuxLoading--;
-      if (err || (stderr && stderr.trim())) return;
-      self._panes = (stdout || '1').trim().split('\n').length || 1;
-    });
-  },
-
-  wait: function(callback) {
-    var self = this;
-    if (!this.used) return callback();
-    if (cp.execFileSync) return callback();
-    var timer = setInterval(function() {
-      if (!self._tmuxLoading) {
-        clearInterval(timer);
-        return callback();
-      }
-    }, 100);
-  },
-
-  get version() {
-    var version = -1;
-    if (!this.used) return version;
-
-    if (this._version != null) {
-      return this._version;
-    }
-
-    try {
-      version = cp.execFileSync('tmux', ['-V'], { encoding: 'utf8' });
-      version = +(version || '1').trim().split(/\s+/).pop() || 1;
-    } catch (e) {
-      ;
-    }
-
-    if (this._version == null) {
-      this._version = version;
-    }
-
-    return version;
-  },
-
-  get panes() {
-    return 1; // doesn't seem to matter
-
-    var panes = -1;
-    if (!this.used) return panes;
-
-    if (this._panes != null) {
-      return this._panes;
-    }
-
-    try {
-      panes = cp.execFileSync('tmux', ['list-panes'], { encoding: 'utf8' });
-      panes = (panes || '1').trim().split('\n').length || 1;
-    } catch (e) {
-      ;
-    }
-
-    if (this._panes == null) {
-      this._panes = panes;
-    }
-
-    return panes;
-  }
-};
-
 Program.prototype.enableMouse = function() {
   if (process.env.BLESSED_FORCE_MODES) {
     var modes = process.env.BLESSED_FORCE_MODES.split(',');
@@ -3247,29 +3174,11 @@ Program.prototype.enableMouse = function() {
   if (this.term('xterm')
       || this.term('screen')
       || (this.tput && this.tput.strings.key_mouse)) {
-    return this.tmux.wait(function() {
-      // console.error({
-      //   method: 'enable',
-      //   sync: !!cp.execFileSync,
-      //   version: this.tmux.version,
-      //   panes: this.tmux.panes
-      // });
-      if (this.tmux.used && this.tmux.version >= 2 && this.tmux.panes > 1) {
-        // NOTE: tmux>=2.0 does not support allMotion.
-        return this.setMouse({
-          vt200Mouse: true,
-          utfMouse: true,
-          cellMotion: true,
-          allMotion: true
-        }, true);
-      }
-
     return this.setMouse({
       vt200Mouse: true,
       utfMouse: true,
       allMotion: true
     }, true);
-    }.bind(this));
   }
 };
 
@@ -3349,34 +3258,14 @@ Program.prototype.setMouse = function(opt, enable) {
   //     Ps = 1 0 0 3  -> Don't use All Motion Mouse Tracking.
   // any event mouse
   if (opt.allMotion != null) {
-    if (opt.allMotion) {
+    // NOTE: Latest versions of tmux seem to only support cellMotion (not
-      this.tmux.wait(function() {
+    // allMotion). We pass all motion through to the terminal.
-        // console.error({
+    if (process.env.TMUX && this.tmuxVersion >= 2) {
-        //   method: 'set',
+      if (opt.allMotion) this._twrite('\x1b[?1003h');
-        //   on: true,
+      else this._twrite('\x1b[?1003l');
-        //   sync: !!cp.execFileSync,
-        //   version: this.tmux.version,
-        //   panes: this.tmux.panes
-        // });
-        if (this.tmux.used && this.tmux.version >= 2 && this.tmux.panes === 1) {
-          this._twrite('\x1b[?1003h');
     } else {
-          this.setMode('?1003');
+      if (opt.allMotion) this.setMode('?1003');
-        }
+      else this.resetMode('?1003');
-      }.bind(this));
-    } else {
-      // console.error({
-      //   method: 'set',
-      //   on: false,
-      //   sync: !!cp.execFileSync,
-      //   version: this.tmux.version,
-      //   panes: this.tmux.panes
-      // });
-      if (this.tmux.used && this.tmux.version >= 2 && this.tmux.panes === 1) {
-        this._twrite('\x1b[?1003l');
-      } else {
-        this.resetMode('?1003');
-      }
     }
   }