48a81b7cda
This modifies gettreediffline so that it when we get both a "U" line and an "M" line for the same file in the output from git diff-files or git diff-index --cached (used when the user clicks on a fake commit) we don't add the same filename to the treediff list twice. This also makes getblobdiffline recognize the "* Unmerged path ..." lines we get when we ask for the actual diffs, and makes a tiny optimization in makediffhdr. Signed-off-by: Paul Mackerras <paulus@samba.org>