t0021: avoid getting filter killed with SIGPIPE

diff --git a/git-rebase--interactive.sh b/git-rebase--interactive.sh
index a27952d9fdfb517f684b7d304831bf74d0ce237b..a5ffd9a31eea0f361774d77867c83f444847279b 100755 (executable)
--- a/git-rebase--interactive.sh
+++ b/git-rebase--interactive.sh
@@ -28,6 +28,7 @@ continue           continue rebasing process
 abort              abort rebasing process and restore original branch
 skip               skip current patch and continue rebasing process
 no-verify          override pre-rebase hook from stopping the operation
+verify             allow pre-rebase hook to run
 root               rebase all reachable commmits up to the root(s)
 autosquash         move commits that begin with squash!/fixup! under -i
 "
@@ -153,14 +154,6 @@ run_pre_rebase_hook () {
        fi
 }
 
-require_clean_work_tree () {
-       # test if working tree is dirty
-       git rev-parse --verify HEAD > /dev/null &&
-       git update-index --ignore-submodules --refresh &&
-       git diff-files --quiet --ignore-submodules &&
-       git diff-index --cached --quiet HEAD --ignore-submodules -- ||
-       die "Working tree is dirty"
-}
 
 ORIG_REFLOG_ACTION="$GIT_REFLOG_ACTION"
 
@@ -557,7 +550,7 @@ do_next () {
                        exit "$status"
                fi
                # Run in subshell because require_clean_work_tree can die.
-               if ! (require_clean_work_tree)
+               if ! (require_clean_work_tree "rebase")
                then
                        warn "Commit or stash your changes, and then run"
                        warn
@@ -675,9 +668,27 @@ get_saved_options () {
 # comes immediately after the former, and change "pick" to
 # "fixup"/"squash".
 rearrange_squash () {
-       sed -n -e 's/^pick \([0-9a-f]*\) \(squash\)! /\1 \2 /p' \
-               -e 's/^pick \([0-9a-f]*\) \(fixup\)! /\1 \2 /p' \
-               "$1" >"$1.sq"
+       # extract fixup!/squash! lines and resolve any referenced sha1's
+       while read -r pick sha1 message
+       do
+               case "$message" in
+               "squash! "*|"fixup! "*)
+                       action="${message%%!*}"
+                       rest="${message#*! }"
+                       echo "$sha1 $action $rest"
+                       # if it's a single word, try to resolve to a full sha1 and
+                       # emit a second copy. This allows us to match on both message
+                       # and on sha1 prefix
+                       if test "${rest#* }" = "$rest"; then
+                               fullsha="$(git rev-parse -q --verify "$rest" 2>/dev/null)"
+                               if test -n "$fullsha"; then
+                                       # prefix the action to uniquely identify this line as
+                                       # intended for full sha1 match
+                                       echo "$sha1 +$action $fullsha"
+                               fi
+                       fi
+               esac
+       done >"$1.sq" <"$1"
        test -s "$1.sq" || return
 
        used=
@@ -687,14 +698,26 @@ rearrange_squash () {
                *" $sha1 "*) continue ;;
                esac
                printf '%s\n' "$pick $sha1 $message"
+               used="$used$sha1 "
                while read -r squash action msg
                do
-                       case "$message" in
-                       "$msg"*)
+                       case " $used" in
+                       *" $squash "*) continue ;;
+                       esac
+                       emit=0
+                       case "$action" in
+                       +*)
+                               action="${action#+}"
+                               # full sha1 prefix test
+                               case "$msg" in "$sha1"*) emit=1;; esac ;;
+                       *)
+                               # message prefix test
+                               case "$message" in "$msg"*) emit=1;; esac ;;
+                       esac
+                       if test $emit = 1; then
                                printf '%s\n' "$action $squash $action! $msg"
                                used="$used$squash "
-                               ;;
-                       esac
+                       fi
                done <"$1.sq"
        done >"$1.rearranged" <"$1"
        cat "$1.rearranged" >"$1"
@@ -727,6 +750,7 @@ do
                OK_TO_SKIP_PRE_REBASE=yes
                ;;
        --verify)
+               OK_TO_SKIP_PRE_REBASE=
                ;;
        --continue)
                is_standalone "$@" || usage
@@ -768,7 +792,7 @@ first and then run 'git rebase --continue' again."
 
                record_in_rewritten "$(cat "$DOTEST"/stopped-sha)"
 
-               require_clean_work_tree
+               require_clean_work_tree "rebase"
                do_rest
                ;;
        --abort)
@@ -866,7 +890,7 @@ first and then run 'git rebase --continue' again."
 
                comment_for_reflog start
 
-               require_clean_work_tree
+               require_clean_work_tree "rebase" "Please commit or stash them."
 
                if test ! -z "$1"
                then