[PATCH v2 2/2] difftool: don't assume that default sh is sane
From: Charles Bailey <cbailey32@bloomberg.net>
git-difftool used to create a command list script containing $( ... ) and explicitly calls "sh -c" with this list.
Instead, allow mergetool --tool-help to take a mode parameter and call mergetool directly to invoke the show_tool_help function. This mode parameter is intented for use solely by difftool.
Signed-off-by: Charles Bailey <cbailey32@bloomberg.net>
Helped-by: John Keeping <john@keeping.me.uk>
Signed-off-by: David Aguilar <davvid@gmail.com>
---
Changes since v1:
The case statement for --tool-help=* was made simpler thanks to John.
git-difftool.perl | 6 +-----
git-mergetool.sh | 4 ++++
2 files changed, 5 insertions(+), 5 deletions(-)
Show changes to 2 files +5 −5
git-difftool.perl, git-mergetool.sh
diff --git a/git-difftool.perl b/git-difftool.perl
index 18ca61e..598fcc2 100755
--- a/git-difftool.perl
+++ b/git-difftool.perl
@@ -47,13 +47,9 @@ sub find_worktree
sub print_tool_help
{
- my $cmd = 'TOOL_MODE=diff';
- $cmd .= ' && . "$(git --exec-path)/git-mergetool--lib"';
- $cmd .= ' && show_tool_help';
-
# See the comment at the bottom of file_diff() for the reason behind
# using system() followed by exit() instead of exec().
- my $rc = system('sh', '-c', $cmd);
+ my $rc = system(qw(git mergetool --tool-help=diff));
exit($rc | ($rc >> 8));
}
diff --git a/git-mergetool.sh b/git-mergetool.sh
index a502430..ea8fe37 100755
--- a/git-mergetool.sh
+++ b/git-mergetool.sh
@@ -327,6 +327,10 @@ guessed_merge_tool=false
while test $# != 0
do
case "$1" in
+ --tool-help=*)
+ TOOL_MODE=${1#--tool-help=}
+ show_tool_help
+ ;;
--tool-help)
show_tool_help
;;
--
2.1.2.377.g0e18f12
David Aguilar