config: match both symlink & realpath versions in IncludeIf.gitdir:*

diff --git a/git-mergetool.sh b/git-mergetool.sh
index b506896dc1fcd8b2037d3bb61525371a74d0ca03..c062e3de3a503bd01203f2a6aef63eea63cae5c5 100755 (executable)
--- a/git-mergetool.sh
+++ b/git-mergetool.sh
@@ -454,6 +454,17 @@ main () {
        merge_keep_backup="$(git config --bool mergetool.keepBackup || echo true)"
        merge_keep_temporaries="$(git config --bool mergetool.keepTemporaries || echo false)"
 
+       prefix=$(git rev-parse --show-prefix) || exit 1
+       cd_to_toplevel
+
+       if test -n "$orderfile"
+       then
+               orderfile=$(
+                       git rev-parse --prefix "$prefix" -- "$orderfile" |
+                       sed -e 1d
+               )
+       fi
+
        if test $# -eq 0 && test -e "$GIT_DIR/MERGE_RR"
        then
                set -- $(git rerere remaining)
@@ -461,14 +472,16 @@ main () {
                then
                        print_noop_and_exit
                fi
+       elif test $# -ge 0
+       then
+               # rev-parse provides the -- needed for 'set'
+               eval "set $(git rev-parse --sq --prefix "$prefix" -- "$@")"
        fi
 
        files=$(git -c core.quotePath=false \
                diff --name-only --diff-filter=U \
                ${orderfile:+"-O$orderfile"} -- "$@")
 
-       cd_to_toplevel
-
        if test -z "$files"
        then
                print_noop_and_exit