1 files changed, 16 insertions, 6 deletions

diff --git a/builtin/commit.c b/builtin/commit.c
index d054f84960..391126e58d 100644
--- a/builtin/commit.c
+++ b/builtin/commit.c
@@ -186,6 +186,7 @@ static void status_init_config(struct wt_status *s, config_fn_t fn)
 	gitmodules_config();
 	git_config(fn, s);
 	determine_whence(s);
+	init_diff_ui_defaults();
 	s->hints = advice_status_hints; /* must come after git_config() */
 }
 
@@ -694,7 +695,7 @@ static int prepare_to_commit(const char *index_file, const char *prefix,
 		}
 	}
 
-	if (message.len) {
+	if (have_option_m) {
 		strbuf_addbuf(&sb, &message);
 		hook_arg1 = "message";
 	} else if (logfile && !strcmp(logfile, "-")) {
@@ -726,9 +727,18 @@ static int prepare_to_commit(const char *index_file, const char *prefix,
 				      &sb, &ctx);
 		hook_arg1 = "message";
 	} else if (!stat(git_path_merge_msg(), &statbuf)) {
+		/*
+		 * prepend SQUASH_MSG here if it exists and a
+		 * "merge --squash" was originally performed
+		 */
+		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
+			hook_arg1 = "merge";
 		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)
 			die_errno(_("could not read SQUASH_MSG"));
@@ -761,7 +771,7 @@ static int prepare_to_commit(const char *index_file, const char *prefix,
 		hook_arg2 = "";
 	}
 
-	s->fp = fopen(git_path(commit_editmsg), "w");
+	s->fp = fopen_for_writing(git_path(commit_editmsg));
 	if (s->fp == NULL)
 		die_errno(_("could not open '%s'"), git_path(commit_editmsg));
 
@@ -1162,9 +1172,9 @@ static int parse_and_validate_options(int argc, const char *argv[],
 		f++;
 	if (f > 1)
 		die(_("Only one of -c/-C/-F/--fixup can be used."));
-	if (message.len && f > 0)
+	if (have_option_m && f > 0)
 		die((_("Option -m cannot be combined with -c/-C/-F/--fixup.")));
-	if (f || message.len)
+	if (f || have_option_m)
 		template_file = NULL;
 	if (edit_message)
 		use_message = edit_message;
@@ -1690,7 +1700,7 @@ int cmd_commit(int argc, const char **argv, const char *prefix)
 		if (fp == NULL)
 			die_errno(_("could not open '%s' for reading"),
 				  git_path_merge_head());
-		while (strbuf_getline(&m, fp, '\n') != EOF) {
+		while (strbuf_getline_lf(&m, fp) != EOF) {
 			struct commit *parent;
 
 			parent = get_merge_parent(m.buf);