1 files changed, 69 insertions, 111 deletions

diff --git a/builtin/commit.c b/builtin/commit.c
index e108c53015..dca09e2c3b 100644
--- a/builtin/commit.c
+++ b/builtin/commit.c
@@ -34,12 +34,12 @@
 #include "mailmap.h"
 
 static const char * const builtin_commit_usage[] = {
-	N_("git commit [options] [--] <pathspec>..."),
+	N_("git commit [<options>] [--] <pathspec>..."),
 	NULL
 };
 
 static const char * const builtin_status_usage[] = {
-	N_("git status [options] [--] <pathspec>..."),
+	N_("git status [<options>] [--] <pathspec>..."),
 	NULL
 };
 
@@ -166,11 +166,11 @@ static int opt_parse_m(const struct option *opt, const char *arg, int unset)
 
 static void determine_whence(struct wt_status *s)
 {
-	if (file_exists(git_path("MERGE_HEAD")))
+	if (file_exists(git_path_merge_head()))
 		whence = FROM_MERGE;
-	else if (file_exists(git_path("CHERRY_PICK_HEAD"))) {
+	else if (file_exists(git_path_cherry_pick_head())) {
 		whence = FROM_CHERRY_PICK;
-		if (file_exists(git_path("sequencer")))
+		if (file_exists(git_path(SEQ_DIR)))
 			sequencer_in_use = 1;
 	}
 	else
@@ -229,7 +229,7 @@ static int commit_index_files(void)
 static int list_paths(struct string_list *list, const char *with_tree,
 		      const char *prefix, const struct pathspec *pattern)
 {
-	int i;
+	int i, ret;
 	char *m;
 
 	if (!pattern->nr)
@@ -256,7 +256,9 @@ static int list_paths(struct string_list *list, const char *with_tree,
 			item->util = item; /* better a valid pointer than a fake one */
 	}
 
-	return report_path_error(m, pattern, prefix);
+	ret = report_path_error(m, pattern, prefix);
+	free(m);
+	return ret;
 }
 
 static void add_remove_files(struct string_list *list)
@@ -322,6 +324,7 @@ static const char *prepare_index(int argc, const char **argv, const char *prefix
 	struct string_list partial;
 	struct pathspec pathspec;
 	int refresh_flags = REFRESH_QUIET;
+	const char *ret;
 
 	if (is_status)
 		refresh_flags |= REFRESH_UNMERGED;
@@ -342,7 +345,7 @@ static const char *prepare_index(int argc, const char **argv, const char *prefix
 			die(_("unable to create temporary index"));
 
 		old_index_env = getenv(INDEX_ENVIRONMENT);
-		setenv(INDEX_ENVIRONMENT, index_lock.filename.buf, 1);
+		setenv(INDEX_ENVIRONMENT, get_lock_file_path(&index_lock), 1);
 
 		if (interactive_add(argc, argv, prefix, patch_interactive) != 0)
 			die(_("interactive add failed"));
@@ -353,7 +356,7 @@ static const char *prepare_index(int argc, const char **argv, const char *prefix
 			unsetenv(INDEX_ENVIRONMENT);
 
 		discard_cache();
-		read_cache_from(index_lock.filename.buf);
+		read_cache_from(get_lock_file_path(&index_lock));
 		if (update_main_cache_tree(WRITE_TREE_SILENT) == 0) {
 			if (reopen_lock_file(&index_lock) < 0)
 				die(_("unable to write index file"));
@@ -363,7 +366,7 @@ static const char *prepare_index(int argc, const char **argv, const char *prefix
 			warning(_("Failed to update main cache tree"));
 
 		commit_style = COMMIT_NORMAL;
-		return index_lock.filename.buf;
+		return get_lock_file_path(&index_lock);
 	}
 
 	/*
@@ -386,7 +389,7 @@ static const char *prepare_index(int argc, const char **argv, const char *prefix
 		if (write_locked_index(&the_index, &index_lock, CLOSE_LOCK))
 			die(_("unable to write new_index file"));
 		commit_style = COMMIT_NORMAL;
-		return index_lock.filename.buf;
+		return get_lock_file_path(&index_lock);
 	}
 
 	/*
@@ -402,10 +405,8 @@ static const char *prepare_index(int argc, const char **argv, const char *prefix
 		hold_locked_index(&index_lock, 1);
 		refresh_cache_or_die(refresh_flags);
 		if (active_cache_changed
-		    || !cache_tree_fully_valid(active_cache_tree)) {
+		    || !cache_tree_fully_valid(active_cache_tree))
 			update_main_cache_tree(WRITE_TREE_SILENT);
-			active_cache_changed = 1;
-		}
 		if (active_cache_changed) {
 			if (write_locked_index(&the_index, &index_lock,
 					       COMMIT_LOCK))
@@ -473,9 +474,9 @@ static const char *prepare_index(int argc, const char **argv, const char *prefix
 		die(_("unable to write temporary index file"));
 
 	discard_cache();
-	read_cache_from(false_lock.filename.buf);
-
-	return false_lock.filename.buf;
+	ret = get_lock_file_path(&false_lock);
+	read_cache_from(ret);
+	return ret;
 }
 
 static int run_status(FILE *fp, const char *index_file, const char *prefix, int nowarn,
@@ -522,6 +523,12 @@ static int is_a_merge(const struct commit *current_head)
 	return !!(current_head->parents && current_head->parents->next);
 }
 
+static void assert_split_ident(struct ident_split *id, const struct strbuf *buf)
+{
+	if (split_ident_line(id, buf->buf, buf->len) || !id->date_begin)
+		die("BUG: unable to parse our own ident: %s", buf->buf);
+}
+
 static void export_one(const char *var, const char *s, const char *e, int hack)
 {
 	struct strbuf buf = STRBUF_INIT;
@@ -532,20 +539,6 @@ static void export_one(const char *var, const char *s, const char *e, int hack)
 	strbuf_release(&buf);
 }
 
-static int sane_ident_split(struct ident_split *person)
-{
-	if (!person->name_begin || !person->name_end ||
-	    person->name_begin == person->name_end)
-		return 0; /* no human readable name */
-	if (!person->mail_begin || !person->mail_end ||
-	    person->mail_begin == person->mail_end)
-		return 0; /* no usable mail */
-	if (!person->date_begin || !person->date_end ||
-	    !person->tz_begin || !person->tz_end)
-		return 0;
-	return 1;
-}
-
 static int parse_force_date(const char *in, struct strbuf *out)
 {
 	strbuf_addch(out, '@');
@@ -567,20 +560,14 @@ static void set_ident_var(char **buf, char *val)
 	*buf = val;
 }
 
-static char *envdup(const char *var)
-{
-	const char *val = getenv(var);
-	return val ? xstrdup(val) : NULL;
-}
-
 static void determine_author_info(struct strbuf *author_ident)
 {
 	char *name, *email, *date;
 	struct ident_split author;
 
-	name = envdup("GIT_AUTHOR_NAME");
-	email = envdup("GIT_AUTHOR_EMAIL");
-	date = envdup("GIT_AUTHOR_DATE");
+	name = xstrdup_or_null(getenv("GIT_AUTHOR_NAME"));
+	email = xstrdup_or_null(getenv("GIT_AUTHOR_EMAIL"));
+	date = xstrdup_or_null(getenv("GIT_AUTHOR_DATE"));
 
 	if (author_message) {
 		struct ident_split ident;
@@ -623,25 +610,15 @@ static void determine_author_info(struct strbuf *author_ident)
 	}
 
 	strbuf_addstr(author_ident, fmt_ident(name, email, date, IDENT_STRICT));
-	if (!split_ident_line(&author, author_ident->buf, author_ident->len) &&
-	    sane_ident_split(&author)) {
-		export_one("GIT_AUTHOR_NAME", author.name_begin, author.name_end, 0);
-		export_one("GIT_AUTHOR_EMAIL", author.mail_begin, author.mail_end, 0);
-		export_one("GIT_AUTHOR_DATE", author.date_begin, author.tz_end, '@');
-	}
-
+	assert_split_ident(&author, author_ident);
+	export_one("GIT_AUTHOR_NAME", author.name_begin, author.name_end, 0);
+	export_one("GIT_AUTHOR_EMAIL", author.mail_begin, author.mail_end, 0);
+	export_one("GIT_AUTHOR_DATE", author.date_begin, author.tz_end, '@');
 	free(name);
 	free(email);
 	free(date);
 }
 
-static void split_ident_or_die(struct ident_split *id, const struct strbuf *buf)
-{
-	if (split_ident_line(id, buf->buf, buf->len) ||
-	    !sane_ident_split(id))
-		die(_("Malformed ident string: '%s'"), buf->buf);
-}
-
 static int author_date_is_interesting(void)
 {
 	return author_message || force_date;
@@ -747,12 +724,12 @@ static int prepare_to_commit(const char *index_file, const char *prefix,
 		format_commit_message(commit, "fixup! %s\n\n",
 				      &sb, &ctx);
 		hook_arg1 = "message";
-	} else if (!stat(git_path("MERGE_MSG"), &statbuf)) {
-		if (strbuf_read_file(&sb, git_path("MERGE_MSG"), 0) < 0)
+	} else if (!stat(git_path_merge_msg(), &statbuf)) {
+		if (strbuf_read_file(&sb, git_path_merge_msg(), 0) < 0)
 			die_errno(_("could not read MERGE_MSG"));
 		hook_arg1 = "merge";
-	} else if (!stat(git_path("SQUASH_MSG"), &statbuf)) {
-		if (strbuf_read_file(&sb, git_path("SQUASH_MSG"), 0) < 0)
+	} else if (!stat(git_path_squash_msg(), &statbuf)) {
+		if (strbuf_read_file(&sb, git_path_squash_msg(), 0) < 0)
 			die_errno(_("could not read SQUASH_MSG"));
 		hook_arg1 = "squash";
 	} else if (template_file) {
@@ -798,34 +775,10 @@ static int prepare_to_commit(const char *index_file, const char *prefix,
 	s->hints = 0;
 
 	if (clean_message_contents)
-		stripspace(&sb, 0);
+		strbuf_stripspace(&sb, 0);
 
-	if (signoff) {
-		/*
-		 * See if we have a Conflicts: block at the end. If yes, count
-		 * its size, so we can ignore it.
-		 */
-		int ignore_footer = 0;
-		int i, eol, previous = 0;
-		const char *nl;
-
-		for (i = 0; i < sb.len; i++) {
-			nl = memchr(sb.buf + i, '\n', sb.len - i);
-			if (nl)
-				eol = nl - sb.buf;
-			else
-				eol = sb.len;
-			if (starts_with(sb.buf + previous, "\nConflicts:\n")) {
-				ignore_footer = sb.len - previous;
-				break;
-			}
-			while (i < eol)
-				i++;
-			previous = eol;
-		}
-
-		append_signoff(&sb, ignore_footer, 0);
-	}
+	if (signoff)
+		append_signoff(&sb, ignore_non_trailer(&sb), 0);
 
 	if (fwrite(sb.buf, 1, sb.len, s->fp) < sb.len)
 		die_errno(_("could not write commit template"));
@@ -880,8 +833,14 @@ static int prepare_to_commit(const char *index_file, const char *prefix,
 			status_printf_ln(s, GIT_COLOR_NORMAL,
 					"%s", only_include_assumed);
 
-		split_ident_or_die(&ai, author_ident);
-		split_ident_or_die(&ci, &committer_ident);
+		/*
+		 * These should never fail because they come from our own
+		 * fmt_ident. They may fail the sane_ident test, but we know
+		 * that the name and mail pointers will at least be valid,
+		 * which is enough for our tests and printing here.
+		 */
+		assert_split_ident(&ai, author_ident);
+		assert_split_ident(&ci, &committer_ident);
 
 		if (ident_cmp(&ai, &ci))
 			status_printf_ln(s, GIT_COLOR_NORMAL,
@@ -896,7 +855,7 @@ static int prepare_to_commit(const char *index_file, const char *prefix,
 				_("%s"
 				"Date:      %s"),
 				ident_shown++ ? "" : "\n",
-				show_ident_date(&ai, DATE_NORMAL));
+				show_ident_date(&ai, DATE_MODE(NORMAL)));
 
 		if (!committer_ident_sufficiently_given())
 			status_printf_ln(s, GIT_COLOR_NORMAL,
@@ -1055,7 +1014,7 @@ static int template_untouched(struct strbuf *sb)
 	if (!template_file || strbuf_read_file(&tmpl, template_file, 0) <= 0)
 		return 0;
 
-	stripspace(&tmpl, cleanup_mode == CLEANUP_ALL);
+	strbuf_stripspace(&tmpl, cleanup_mode == CLEANUP_ALL);
 	if (!skip_prefix(sb->buf, tmpl.buf, &start))
 		start = sb->buf;
 	strbuf_release(&tmpl);
@@ -1086,13 +1045,13 @@ static const char *find_author_by_nickname(const char *name)
 	commit = get_revision(&revs);
 	if (commit) {
 		struct pretty_print_context ctx = {0};
-		ctx.date_mode = DATE_NORMAL;
+		ctx.date_mode.type = DATE_NORMAL;
 		strbuf_release(&buf);
 		format_commit_message(commit, "%aN <%aE>", &buf, &ctx);
 		clear_mailmap(&mailmap);
 		return strbuf_detach(&buf, NULL);
 	}
-	die(_("No existing author found with '%s'"), name);
+	die(_("--author '%s' is not 'Name <email>' and matches no existing author"), name);
 }
 
 
@@ -1406,13 +1365,14 @@ int cmd_status(int argc, const char **argv, const char *prefix)
 	refresh_index(&the_index, REFRESH_QUIET|REFRESH_UNMERGED, &s.pathspec, NULL, NULL);
 
 	fd = hold_locked_index(&index_lock, 0);
-	if (0 <= fd)
-		update_index_if_able(&the_index, &index_lock);
 
 	s.is_initial = get_sha1(s.reference, sha1) ? 1 : 0;
 	s.ignore_submodule_arg = ignore_submodule_arg;
 	wt_status_collect(&s);
 
+	if (0 <= fd)
+		update_index_if_able(&the_index, &index_lock);
+
 	if (s.relative_paths)
 		s.prefix = prefix;
 
@@ -1438,12 +1398,10 @@ int cmd_status(int argc, const char **argv, const char *prefix)
 
 static const char *implicit_ident_advice(void)
 {
-	char *user_config = NULL;
-	char *xdg_config = NULL;
-	int config_exists;
+	char *user_config = expand_user_path("~/.gitconfig");
+	char *xdg_config = xdg_config_home("config");
+	int config_exists = file_exists(user_config) || file_exists(xdg_config);
 
-	home_config_paths(&user_config, &xdg_config, "config");
-	config_exists = file_exists(user_config) || file_exists(xdg_config);
 	free(user_config);
 	free(xdg_config);
 
@@ -1725,10 +1683,10 @@ int cmd_commit(int argc, const char **argv, const char *prefix)
 		if (!reflog_msg)
 			reflog_msg = "commit (merge)";
 		pptr = &commit_list_insert(current_head, pptr)->next;
-		fp = fopen(git_path("MERGE_HEAD"), "r");
+		fp = fopen(git_path_merge_head(), "r");
 		if (fp == NULL)
 			die_errno(_("could not open '%s' for reading"),
-				  git_path("MERGE_HEAD"));
+				  git_path_merge_head());
 		while (strbuf_getline(&m, fp, '\n') != EOF) {
 			struct commit *parent;
 
@@ -1739,8 +1697,8 @@ int cmd_commit(int argc, const char **argv, const char *prefix)
 		}
 		fclose(fp);
 		strbuf_release(&m);
-		if (!stat(git_path("MERGE_MODE"), &statbuf)) {
-			if (strbuf_read_file(&sb, git_path("MERGE_MODE"), 0) < 0)
+		if (!stat(git_path_merge_mode(), &statbuf)) {
+			if (strbuf_read_file(&sb, git_path_merge_mode(), 0) < 0)
 				die_errno(_("could not read MERGE_MODE"));
 			if (!strcmp(sb.buf, "no-ff"))
 				allow_fast_forward = 0;
@@ -1768,7 +1726,7 @@ int cmd_commit(int argc, const char **argv, const char *prefix)
 		wt_status_truncate_message_at_cut_line(&sb);
 
 	if (cleanup_mode != CLEANUP_NONE)
-		stripspace(&sb, cleanup_mode == CLEANUP_ALL);
+		strbuf_stripspace(&sb, cleanup_mode == CLEANUP_ALL);
 	if (template_untouched(&sb) && !allow_empty_message) {
 		rollback_index_files();
 		fprintf(stderr, _("Aborting commit; you did not edit the message.\n"));
@@ -1808,20 +1766,20 @@ int cmd_commit(int argc, const char **argv, const char *prefix)
 	if (!transaction ||
 	    ref_transaction_update(transaction, "HEAD", sha1,
 				   current_head
-				   ? current_head->object.sha1 : NULL,
-				   0, !!current_head, sb.buf, &err) ||
+				   ? current_head->object.sha1 : null_sha1,
+				   0, sb.buf, &err) ||
 	    ref_transaction_commit(transaction, &err)) {
 		rollback_index_files();
 		die("%s", err.buf);
 	}
 	ref_transaction_free(transaction);
 
-	unlink(git_path("CHERRY_PICK_HEAD"));
-	unlink(git_path("REVERT_HEAD"));
-	unlink(git_path("MERGE_HEAD"));
-	unlink(git_path("MERGE_MSG"));
-	unlink(git_path("MERGE_MODE"));
-	unlink(git_path("SQUASH_MSG"));
+	unlink(git_path_cherry_pick_head());
+	unlink(git_path_revert_head());
+	unlink(git_path_merge_head());
+	unlink(git_path_merge_msg());
+	unlink(git_path_merge_mode());
+	unlink(git_path_squash_msg());
 
 	if (commit_index_files())
 		die (_("Repository has been updated, but unable to write\n"