[PATCH 1/1] git gui: fix staging a second line to a 1-line file

["Johannes Schindelin via GitGitGadget" <gitgitgadget@gmail.com>]

From: Johannes Schindelin <johannes.schindelin@gmx.de>

When a 1-line file is augmented by a second line, and the user tries to
stage that single line via the "Stage Line" context menu item, we do not
want to see "apply: corrupt patch at line 5".

The reason for this error was that the hunk header looks like this:

	@@ -1 +1,2 @@

but the existing code expects the original range always to contain a
comma. This problem is easily fixed by cutting the string "1 +1,2"
(that Git GUI formerly mistook for the starting line) at the space.

This fixes https://github.com/git-for-windows/git/issues/515

Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de>
---
 lib/diff.tcl | 1 +
 1 file changed, 1 insertion(+)

diff --git a/lib/diff.tcl b/lib/diff.tcl
index 4cae10a4c7..68c4a6c736 100644
--- a/lib/diff.tcl
+++ b/lib/diff.tcl
@@ -698,6 +698,7 @@ proc apply_range_or_line {x y} {
 		set hh [$ui_diff get $i_l "$i_l + 1 lines"]
 		set hh [lindex [split $hh ,] 0]
 		set hln [lindex [split $hh -] 1]
+		set hln [lindex [split $hln " "] 0]
 
 		# There is a special situation to take care of. Consider this
 		# hunk:
-- 
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