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avoid wrapping shortfall due to surrogate pairs.

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Christopher Jeffrey 2015-05-01 17:44:49 -07:00
parent 092b240ef6
commit ba4108445a
1 changed files with 11 additions and 0 deletions
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11
lib/widget.js
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@ -2846,6 +2846,17 @@ main:
} else {
// Try to find a character to break on.
if (i !== line.length) {
// <XXX>
// Compensate for surrogate length
// counts on wrapping (experimental):
// NOTE: Could optimize this by putting
// it in the parent for loop.
if (unicode.isSurrogate(line, i)) i--;
for (var s = 0, n = 0; n < i; n++) {
if (unicode.isSurrogate(line, n)) s++, n++;
}
i += s;
// </XXX>
j = i;
// Break _past_ space.
// Break _past_ double-width chars.