add -e: do not show difference in a submodule that is merely dirty

diff --git a/builtin/checkout.c b/builtin/checkout.c
index 4761769512a8abcdd5652a93d39be18154e251dd..4c20dae34d2fc095195d91adae0af26087306277 100644 (file)
--- a/builtin/checkout.c
+++ b/builtin/checkout.c
@@ -201,7 +201,7 @@ static int checkout_merged(int pos, struct checkout *state)
 }
 
 static int checkout_paths(struct tree *source_tree, const char **pathspec,
-                         struct checkout_opts *opts)
+                         const char *prefix, struct checkout_opts *opts)
 {
        int pos;
        struct checkout state;
@@ -231,7 +231,7 @@ static int checkout_paths(struct tree *source_tree, const char **pathspec,
                match_pathspec(pathspec, ce->name, ce_namelen(ce), 0, ps_matched);
        }
 
-       if (report_path_error(ps_matched, pathspec, 0))
+       if (report_path_error(ps_matched, pathspec, prefix))
                return 1;
 
        /* "checkout -m path" to recreate conflicted state */
@@ -306,9 +306,8 @@ static void show_local_changes(struct object *head, struct diff_options *opts)
 static void describe_detached_head(const char *msg, struct commit *commit)
 {
        struct strbuf sb = STRBUF_INIT;
-       struct pretty_print_context ctx = {0};
        parse_commit(commit);
-       pretty_print_commit(CMIT_FMT_ONELINE, commit, &sb, &ctx);
+       pp_commit_easy(CMIT_FMT_ONELINE, commit, &sb);
        fprintf(stderr, "%s %s... %s\n", msg,
                find_unique_abbrev(commit->object.sha1, DEFAULT_ABBREV), sb.buf);
        strbuf_release(&sb);
@@ -623,14 +622,12 @@ static int clear_commit_marks_from_one_ref(const char *refname,
 
 static void describe_one_orphan(struct strbuf *sb, struct commit *commit)
 {
-       struct pretty_print_context ctx = { 0 };
-
        parse_commit(commit);
        strbuf_addstr(sb, "  ");
        strbuf_addstr(sb,
                find_unique_abbrev(commit->object.sha1, DEFAULT_ABBREV));
        strbuf_addch(sb, ' ');
-       pretty_print_commit(CMIT_FMT_ONELINE, commit, sb, &ctx);
+       pp_commit_easy(CMIT_FMT_ONELINE, commit, sb);
        strbuf_addch(sb, '\n');
 }
 
@@ -718,10 +715,12 @@ static int switch_branches(struct checkout_opts *opts, struct branch_info *new)
        unsigned char rev[20];
        int flag;
        memset(&old, 0, sizeof(old));
-       old.path = resolve_ref("HEAD", rev, 0, &flag);
+       old.path = xstrdup(resolve_ref("HEAD", rev, 0, &flag));
        old.commit = lookup_commit_reference_gently(rev, 1);
-       if (!(flag & REF_ISSYMREF))
+       if (!(flag & REF_ISSYMREF)) {
+               free((char *)old.path);
                old.path = NULL;
+       }
 
        if (old.path && !prefixcmp(old.path, "refs/heads/"))
                old.name = old.path + strlen("refs/heads/");
@@ -744,6 +743,7 @@ static int switch_branches(struct checkout_opts *opts, struct branch_info *new)
        update_refs_for_switch(opts, &old, new);
 
        ret = post_checkout_hook(old.commit, new->commit, 1);
+       free((char *)old.path);
        return ret || opts->writeout_error;
 }
 
@@ -1063,7 +1063,7 @@ int cmd_checkout(int argc, const char **argv, const char *prefix)
                if (1 < !!opts.writeout_stage + !!opts.force + !!opts.merge)
                        die(_("git checkout: --ours/--theirs, --force and --merge are incompatible when\nchecking out of the index."));
 
-               return checkout_paths(source_tree, pathspec, &opts);
+               return checkout_paths(source_tree, pathspec, prefix, &opts);
        }
 
        if (patch_mode)
@@ -1074,7 +1074,7 @@ int cmd_checkout(int argc, const char **argv, const char *prefix)
                if (strbuf_check_branch_ref(&buf, opts.new_branch))
                        die(_("git checkout: we do not like '%s' as a branch name."),
                            opts.new_branch);
-               if (!get_sha1(buf.buf, rev)) {
+               if (ref_exists(buf.buf)) {
                        opts.branch_exists = 1;
                        if (!opts.new_branch_force)
                                die(_("git checkout: branch %s already exists"),