From f79d4c8a0f22d7fd25018be846c7e48127ed3200 Mon Sep 17 00:00:00 2001 From: Nanako Shiraishi Date: Fri, 10 Apr 2009 09:34:42 +0900 Subject: [PATCH] git-am: teach git-am to apply a patch to an unborn branch People sometimes wonder why they cannot apply a patch that only creates new files to an unborn branch. Signed-off-by: Nanako Shiraishi Signed-off-by: Junio C Hamano --- git-am.sh | 29 ++++++++++++++++++++++++----- t/t4150-am.sh | 15 +++++++++++++++ 2 files changed, 39 insertions(+), 5 deletions(-) diff --git a/git-am.sh b/git-am.sh index d3390755fc..774383fb68 100755 --- a/git-am.sh +++ b/git-am.sh @@ -36,6 +36,13 @@ cd_to_toplevel git var GIT_COMMITTER_IDENT >/dev/null || die "You need to set your committer info first" +if git rev-parse --verify -q HEAD >/dev/null +then + HAS_HEAD=yes +else + HAS_HEAD= +fi + sq () { for sqarg do @@ -290,16 +297,26 @@ else : >"$dotest/rebasing" else : >"$dotest/applying" - git update-ref ORIG_HEAD HEAD + if test -n "$HAS_HEAD" + then + git update-ref ORIG_HEAD HEAD + else + git update-ref -d ORIG_HEAD >/dev/null 2>&1 + fi fi fi case "$resolved" in '') - files=$(git diff-index --cached --name-only HEAD --) || exit + case "$HAS_HEAD" in + '') + files=$(git ls-files) ;; + ?*) + files=$(git diff-index --cached --name-only HEAD --) ;; + esac || exit if test "$files" then - : >"$dotest/dirtyindex" + test -n "$HAS_HEAD" && : >"$dotest/dirtyindex" die "Dirty index: cannot apply patches (dirty: $files)" fi esac @@ -541,18 +558,20 @@ do fi tree=$(git write-tree) && - parent=$(git rev-parse --verify HEAD) && commit=$( if test -n "$ignore_date" then GIT_AUTHOR_DATE= fi + parent=$(git rev-parse --verify -q HEAD) || + echo >&2 "applying to an empty history" + if test -n "$committer_date_is_author_date" then GIT_COMMITTER_DATE="$GIT_AUTHOR_DATE" export GIT_COMMITTER_DATE fi && - git commit-tree $tree -p $parent <"$dotest/final-commit" + git commit-tree $tree ${parent:+-p $parent} <"$dotest/final-commit" ) && git update-ref -m "$GIT_REFLOG_ACTION: $FIRSTLINE" HEAD $commit $parent || stop_here $this diff --git a/t/t4150-am.sh b/t/t4150-am.sh index 5e65afa0c1..d6ebbaebe2 100755 --- a/t/t4150-am.sh +++ b/t/t4150-am.sh @@ -290,4 +290,19 @@ test_expect_success 'am --ignore-date' ' echo "$at" | grep "+0000" ' +test_expect_success 'am into an unborn branch' ' + rm -fr subdir && + mkdir -p subdir && + git format-patch --numbered-files -o subdir -1 first && + ( + cd subdir && + git init && + git am 1 + ) && + result=$( + cd subdir && git rev-parse HEAD^{tree} + ) && + test "z$result" = "z$(git rev-parse first^{tree})" +' + test_done -- 2.11.4.GIT