merge: refuse to create too cool a merge by default

diff --git a/builtin/worktree.c b/builtin/worktree.c
index 78d26902a6f1388a4cdd7d127a2a0c6359a00d19..0a45710be8561e51d1b2e29586a63b0aa8518e56 100644 (file)
--- a/builtin/worktree.c
+++ b/builtin/worktree.c
@@ -12,7 +12,7 @@
 #include "worktree.h"
 
 static const char * const worktree_usage[] = {
-       N_("git worktree add [<options>] <path> <branch>"),
+       N_("git worktree add [<options>] <path> [<branch>]"),
        N_("git worktree prune [<options>]"),
        N_("git worktree list [<options>]"),
        NULL
@@ -52,7 +52,7 @@ static int prune_worktree(const char *id, struct strbuf *reason)
                return 1;
        }
        len = st.st_size;
-       path = xmalloc(len + 1);
+       path = xmallocz(len);
        read_in_full(fd, path, len);
        close(fd);
        while (len && (path[len - 1] == '\n' || path[len - 1] == '\r'))
@@ -277,7 +277,7 @@ static int add_worktree(const char *path, const char *refname,
 
        if (commit)
                argv_array_pushl(&cp.args, "update-ref", "HEAD",
-                                sha1_to_hex(commit->object.sha1), NULL);
+                                oid_to_hex(&commit->object.oid), NULL);
        else
                argv_array_pushl(&cp.args, "symbolic-ref", "HEAD",
                                 symref.buf, NULL);