parse-opt: optionally show "--no-" option string

diff --git a/builtin-blame.c b/builtin-blame.c
index cf74a926149668b7e67544aecd46a0e05d4f59d9..fd6ca51eebb2234be429b47b572ae2f30592ff4e 100644 (file)
--- a/builtin-blame.c
+++ b/builtin-blame.c
@@ -362,18 +362,28 @@ static struct origin *find_origin(struct scoreboard *sb,
                               "", &diff_opts);
        diffcore_std(&diff_opts);
 
-       /* It is either one entry that says "modified", or "created",
-        * or nothing.
-        */
        if (!diff_queued_diff.nr) {
                /* The path is the same as parent */
                porigin = get_origin(sb, parent, origin->path);
                hashcpy(porigin->blob_sha1, origin->blob_sha1);
-       }
-       else if (diff_queued_diff.nr != 1)
-               die("internal error in blame::find_origin");
-       else {
-               struct diff_filepair *p = diff_queued_diff.queue[0];
+       } else {
+               /*
+                * Since origin->path is a pathspec, if the parent
+                * commit had it as a directory, we will see a whole
+                * bunch of deletion of files in the directory that we
+                * do not care about.
+                */
+               int i;
+               struct diff_filepair *p = NULL;
+               for (i = 0; i < diff_queued_diff.nr; i++) {
+                       const char *name;
+                       p = diff_queued_diff.queue[i];
+                       name = p->one->path ? p->one->path : p->two->path;
+                       if (!strcmp(name, origin->path))
+                               break;
+               }
+               if (!p)
+                       die("internal error in blame::find_origin");
                switch (p->status) {
                default:
                        die("internal error in blame::find_origin (%c)",
@@ -1998,23 +2008,23 @@ static struct commit *fake_working_tree_commit(const char *path, const char *con
 
                if (contents_from) {
                        if (stat(contents_from, &st) < 0)
-                               die("Cannot stat %s", contents_from);
+                               die_errno("Cannot stat '%s'", contents_from);
                        read_from = contents_from;
                }
                else {
                        if (lstat(path, &st) < 0)
-                               die("Cannot lstat %s", path);
+                               die_errno("Cannot lstat '%s'", path);
                        read_from = path;
                }
                mode = canon_mode(st.st_mode);
                switch (st.st_mode & S_IFMT) {
                case S_IFREG:
                        if (strbuf_read_file(&buf, read_from, st.st_size) != st.st_size)
-                               die("cannot open or read %s", read_from);
+                               die_errno("cannot open or read '%s'", read_from);
                        break;
                case S_IFLNK:
                        if (strbuf_readlink(&buf, read_from, st.st_size) < 0)
-                               die("cannot readlink %s", read_from);
+                               die_errno("cannot readlink '%s'", read_from);
                        break;
                default:
                        die("unsupported file type %s", read_from);
@@ -2025,7 +2035,7 @@ static struct commit *fake_working_tree_commit(const char *path, const char *con
                contents_from = "standard input";
                mode = 0;
                if (strbuf_read(&buf, 0, 0) < 0)
-                       die("read error %s from stdin", strerror(errno));
+                       die_errno("failed to read from stdin");
        }
        convert_to_git(path, buf.buf, buf.len, &buf, 0);
        origin->file.ptr = buf.buf;
@@ -2229,7 +2239,7 @@ int cmd_blame(int argc, const char **argv, const char *prefix)
        save_commit_buffer = 0;
        dashdash_pos = 0;
 
-       parse_options_start(&ctx, argc, argv, PARSE_OPT_KEEP_DASHDASH |
+       parse_options_start(&ctx, argc, argv, prefix, PARSE_OPT_KEEP_DASHDASH |
                            PARSE_OPT_KEEP_ARGV0);
        for (;;) {
                switch (parse_options_step(&ctx, options, blame_opt_usage)) {
@@ -2251,8 +2261,7 @@ int cmd_blame(int argc, const char **argv, const char *prefix)
        argc = parse_options_end(&ctx);
 
        if (revs_file && read_ancestry(revs_file))
-               die("reading graft file %s failed: %s",
-                   revs_file, strerror(errno));
+               die_errno("reading graft file '%s' failed", revs_file);
 
        if (cmd_is_annotate) {
                output_option |= OUTPUT_ANNOTATE_COMPAT;
@@ -2340,7 +2349,7 @@ int cmd_blame(int argc, const char **argv, const char *prefix)
 
                setup_work_tree();
                if (!has_string_in_work_tree(path))
-                       die("cannot stat path %s: %s", path, strerror(errno));
+                       die_errno("cannot stat path '%s'", path);
        }
 
        setup_revisions(argc, argv, &revs, NULL);