builtin/commit.c: extract ignore_non_trailer() helper function

diff --git a/git-difftool--helper.sh b/git-difftool--helper.sh
index 3d0fe0cd93b393a5f376aa10505e927fbed37f8f..b00ed95dba9c035ee812d3a2d6db2d13a1944a33 100755 (executable)
--- a/git-difftool--helper.sh
+++ b/git-difftool--helper.sh
@@ -40,7 +40,7 @@ launch_merge_tool () {
        # the user with the real $MERGED name before launching $merge_tool.
        if should_prompt
        then
-               printf "\nViewing: '$MERGED'\n"
+               printf "\nViewing: '%s'\n" "$MERGED"
                if use_ext_cmd
                then
                        printf "Launch '%s' [Y/n]: " \