From d7e5c0cbfb0421d8a609f1125267dbad73069410 Mon Sep 17 00:00:00 2001 From: Jay Soffian Date: Sat, 19 Feb 2011 23:12:27 -0500 Subject: Introduce CHERRY_PICK_HEAD When a cherry-pick conflicts git advises: $ git commit -c to preserve the original commit message and authorship. Instead, let's record the original commit id in CHERRY_PICK_HEAD and advise: $ git commit -c CHERRY_PICK_HEAD A later patch teaches git to handle the '-c CHERRY_PICK_HEAD' part. Note that we record CHERRY_PICK_HEAD even in the case where there are no conflicts so that we may use it to communicate authorship to commit; this will then allow us to remove set_author_ident_env from revert.c. However, we do not record CHERRY_PICK_HEAD when --no-commit is used, as presumably the user intends to further edit the commit and possibly even cherry-pick additional commits on top. Tests and documentation contributed by Jonathan Nieder. Reviewed-by: Jonathan Nieder Signed-off-by: Jay Soffian Signed-off-by: Junio C Hamano --- builtin/commit.c | 1 + builtin/merge.c | 7 +++++++ builtin/revert.c | 27 +++++++++++++++++++++++++-- 3 files changed, 33 insertions(+), 2 deletions(-) (limited to 'builtin') diff --git a/builtin/commit.c b/builtin/commit.c index 03cff5af63..0def5401ab 100644 --- a/builtin/commit.c +++ b/builtin/commit.c @@ -1424,6 +1424,7 @@ int cmd_commit(int argc, const char **argv, const char *prefix) die("cannot update HEAD ref"); } + unlink(git_path("CHERRY_PICK_HEAD")); unlink(git_path("MERGE_HEAD")); unlink(git_path("MERGE_MSG")); unlink(git_path("MERGE_MODE")); diff --git a/builtin/merge.c b/builtin/merge.c index 42fff387e6..5ba2efc214 100644 --- a/builtin/merge.c +++ b/builtin/merge.c @@ -969,6 +969,13 @@ int cmd_merge(int argc, const char **argv, const char *prefix) else die("You have not concluded your merge (MERGE_HEAD exists)."); } + if (file_exists(git_path("CHERRY_PICK_HEAD"))) { + if (advice_resolve_conflict) + die("You have not concluded your cherry-pick (CHERRY_PICK_HEAD exists).\n" + "Please, commit your changes before you can merge."); + else + die("You have not concluded your cherry-pick (CHERRY_PICK_HEAD exists)."); + } resolve_undo_clear(); if (verbosity < 0) diff --git a/builtin/revert.c b/builtin/revert.c index bb6e9e83b7..e716a1b000 100644 --- a/builtin/revert.c +++ b/builtin/revert.c @@ -231,6 +231,22 @@ static void set_author_ident_env(const char *message) sha1_to_hex(commit->object.sha1)); } +static void write_cherry_pick_head(void) +{ + int fd; + struct strbuf buf = STRBUF_INIT; + + strbuf_addf(&buf, "%s\n", sha1_to_hex(commit->object.sha1)); + + fd = open(git_path("CHERRY_PICK_HEAD"), O_WRONLY | O_CREAT, 0666); + if (fd < 0) + die_errno("Could not open '%s' for writing", + git_path("CHERRY_PICK_HEAD")); + if (write_in_full(fd, buf.buf, buf.len) != buf.len || close(fd)) + die_errno("Could not write to '%s'", git_path("CHERRY_PICK_HEAD")); + strbuf_release(&buf); +} + static void advise(const char *advice, ...) { va_list params; @@ -246,6 +262,12 @@ static void print_advice(void) if (msg) { fprintf(stderr, "%s\n", msg); + /* + * A conflict has occured but the porcelain + * (typically rebase --interactive) wants to take care + * of the commit itself so remove CHERRY_PICK_HEAD + */ + unlink(git_path("CHERRY_PICK_HEAD")); return; } @@ -253,8 +275,7 @@ static void print_advice(void) advise("with 'git add ' or 'git rm '"); if (action == CHERRY_PICK) - advise("and commit the result with 'git commit -c %s'", - find_unique_abbrev(commit->object.sha1, DEFAULT_ABBREV)); + advise("and commit the result with 'git commit -c CHERRY_PICK_HEAD'"); } static void write_message(struct strbuf *msgbuf, const char *filename) @@ -489,6 +510,8 @@ static int do_pick_commit(void) strbuf_addstr(&msgbuf, sha1_to_hex(commit->object.sha1)); strbuf_addstr(&msgbuf, ")\n"); } + if (!no_commit) + write_cherry_pick_head(); } if (!strategy || !strcmp(strategy, "recursive") || action == REVERT) { -- cgit v1.2.1