Introduce CHERRY_PICK_HEAD

[git/git.git] / builtin / revert.c

diff --git a/builtin/revert.c b/builtin/revert.c
index bb6e9e8..e716a1b 100644 (file)
--- 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 <paths>' or 'git rm <paths>'");
 
        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) {