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git-gui: fix ANSI-color parsing 

git diff always outputs color reset commands, even when the color for the
current part is disabled (ie. normal). But the current ANSI-color parsing code
assumes that color start and reset commands appear in matching pairs.

Relax this assumption.

Signed-off-by: Bert Wesarg <bert.wesarg@googlemail.com>
Signed-off-by: Pat Thoyts <patthoyts@users.sourceforge.net>
maint
Bert Wesarg 2010-11-15 11:00:33 +01:00 committed by Pat Thoyts
parent 8f85599aba
commit 46a0431b99
1 changed files with 10 additions and 2 deletions
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12
lib/diff.tcl
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@ -337,12 +337,20 @@ proc parse_color_line {line} {
set result ""
set markup [list]
set regexp {\033\[((?:\d+;)*\d+)?m}
set need_reset 0
while {[regexp -indices -start $start $regexp $line match code]} {
foreach {begin end} $match break
append result [string range $line $start [expr {$begin - 1}]]
lappend markup [string length $result] \
[eval [linsert $code 0 string range $line]]
set pos [string length $result]
set col [eval [linsert $code 0 string range $line]]
set start [incr end]
if {$col eq "0" || $col eq ""} {
if {!$need_reset} continue
set need_reset 0
} else {
set need_reset 1
}
lappend markup $pos $col
}
append result [string range $line $start end]
if {[llength $markup] < 4} {set markup {}}