From ece7b74903007cee8d280573647243d46a6f3a95 Mon Sep 17 00:00:00 2001 From: Johannes Schindelin Date: Mon, 17 Sep 2007 01:24:57 +0100 Subject: [PATCH] apply --index-info: fall back to current index for mode changes "git diff" does not record index lines for pure mode changes (i.e. no lines changed). Therefore, apply --index-info would call out a bogus error. Instead, fall back to reading the info from the current index. Incidentally, this fixes an error where git-rebase would not rebase a commit including a pure mode change, and changes requiring a threeway merge. Noticed and later tested by Chris Shoemaker. Signed-off-by: Johannes Schindelin Signed-off-by: Junio C Hamano --- builtin-apply.c | 26 ++++++++++++++++++++++++-- t/t3400-rebase.sh | 15 +++++++++++++++ 2 files changed, 39 insertions(+), 2 deletions(-) diff --git a/builtin-apply.c b/builtin-apply.c index 976ec7704..f4ecf03ed 100644 --- a/builtin-apply.c +++ b/builtin-apply.c @@ -2227,6 +2227,20 @@ static int check_patch_list(struct patch *patch) return err; } +/* This function tries to read the sha1 from the current index */ +static int get_current_sha1(const char *path, unsigned char *sha1) +{ + int pos; + + if (read_cache() < 0) + return -1; + pos = cache_name_pos(path, strlen(path)); + if (pos < 0) + return -1; + hashcpy(sha1, active_cache[pos]->sha1); + return 0; +} + static void show_index_list(struct patch *list) { struct patch *patch; @@ -2243,8 +2257,16 @@ static void show_index_list(struct patch *list) if (0 < patch->is_new) sha1_ptr = null_sha1; else if (get_sha1(patch->old_sha1_prefix, sha1)) - die("sha1 information is lacking or useless (%s).", - name); + /* git diff has no index line for mode/type changes */ + if (!patch->lines_added && !patch->lines_deleted) { + if (get_current_sha1(patch->new_name, sha1) || + get_current_sha1(patch->old_name, sha1)) + die("mode change for %s, which is not " + "in current HEAD", name); + sha1_ptr = sha1; + } else + die("sha1 information is lacking or useless " + "(%s).", name); else sha1_ptr = sha1; diff --git a/t/t3400-rebase.sh b/t/t3400-rebase.sh index 62205b253..95e33b521 100755 --- a/t/t3400-rebase.sh +++ b/t/t3400-rebase.sh @@ -68,4 +68,19 @@ test_expect_success \ test 3 = $(git rev-list master.. | wc -l) ' +test_expect_success 'rebase a single mode change' ' + git checkout master && + echo 1 > X && + git add X && + test_tick && + git commit -m prepare && + git checkout -b modechange HEAD^ && + echo 1 > X && + git add X && + chmod a+x A && + test_tick && + git commit -m modechange A X && + GIT_TRACE=1 git rebase master +' + test_done -- 2.26.2