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TokenizedLine::screenColumnForBufferColumn calculates more accurately

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screenColumnForBufferColumn used to break only if the current column
was strictly greater than the target column. This commit changes it so
it breaks when greater or equal, which is how bufferColumnForScreenColumn
works.

This also adds some unit tests for screenColumnForBufferColumn's
interactions with hard tab characters.
This commit is contained in:
Nikolaus Wittenstein
2015-01-27 14:42:00 -05:00
parent 3551780cdf
commit 372fb49c88
2 changed files with 9 additions and 1 deletions
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2
src/tokenized-line.coffee
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@@ -67,7 +67,7 @@ class TokenizedLine
screenColumn = 0
currentBufferColumn = 0
for token in @tokens
break if currentBufferColumn > bufferColumn
break if currentBufferColumn + token.bufferDelta > bufferColumn
screenColumn += token.screenDelta
currentBufferColumn += token.bufferDelta
@clipScreenColumn(screenColumn + (bufferColumn - currentBufferColumn))