merge-ort: remove translator lego in new "submodule conflict suggestion"

In commit 4057523a40 ("submodule merge: update conflict error message",
2022-08-04), the new "submodule conflict suggestion" code was
translating 6 different pieces of the new message and then used
carefully crafted logic to allow stitching it back together with special
formatting.  Keep the components of the message together as much as
possible, so that:
  * we reduce the number of things translators have to translate
  * translators have more control over the format of the output
  * the code is much easier for developers to understand too

Also, reformat some comments running beyond the 80th column while at it.

Signed-off-by: Elijah Newren <newren@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>

merge-ort.c

@@ -4481,34 +4481,6 @@ static int record_conflicted_index_entries(struct merge_options *opt)
 	return errs;
 }
 
-static void format_submodule_conflict_suggestion(struct strbuf *msg) {
-	struct strbuf tmp = STRBUF_INIT;
-	struct string_list msg_list = STRING_LIST_INIT_DUP;
-	int i;
-
-	string_list_split(&msg_list, msg->buf, '\n', -1);
-	for (i = 0; i < msg_list.nr; i++) {
-		if (!i)
-			/*
-			 * TRANSLATORS: This is line item of submodule conflict message
-			 * from print_submodule_conflict_suggestion() below. For RTL
-			 * languages, the following swap is suggested:
-			 *      " - %s\n" -> "%s - \n"
-			 */
-			strbuf_addf(&tmp, _(" - %s\n"), msg_list.items[i].string);
-		else
-			/*
-			 * TRANSLATORS: This is line item of submodule conflict message
-			 * from print_submodule_conflict_suggestion() below. For RTL
-			 * languages, the following swap is suggested:
-			 *      "   %s\n" -> "%s   \n"
-			 */
-			strbuf_addf(&tmp, _("   %s\n"), msg_list.items[i].string);
-	}
-	strbuf_reset(msg);
-	strbuf_add(msg, tmp.buf, tmp.len);
-}
-
 static void print_submodule_conflict_suggestion(struct string_list *csub) {
 	struct string_list_item *item;
 	struct strbuf msg = STRBUF_INIT;
@@ -4530,45 +4502,41 @@ static void print_submodule_conflict_suggestion(struct string_list *csub) {
 			return;
 	}
 
-	printf(_("Recursive merging with submodules currently only supports "
-		"trivial cases.\nPlease manually handle the merging of each "
-		"conflicted submodule.\nThis can be accomplished with the following "
-		"steps:"));
-	putchar('\n');
-
+	strbuf_add_separated_string_list(&subs, " ", csub);
 	for_each_string_list_item(item, csub) {
 		struct conflicted_submodule_item *util = item->util;
+
 		/*
-		 * TRANSLATORS: This is a line of advice to resolve a merge conflict
-		 * in a submodule. The second argument is the abbreviated id of the
-		 * commit that needs to be merged.
-		 * E.g. - go to submodule (sub), and either merge commit abc1234"
+		 * TRANSLATORS: This is a line of advice to resolve a merge
+		 * conflict in a submodule. The first argument is the submodule
+		 * name, and the second argument is the abbreviated id of the
+		 * commit that needs to be merged.  For example:
+		 *  - go to submodule (mysubmodule), and either merge commit abc1234"
 		 */
-		strbuf_addf(&tmp, _("go to submodule (%s), and either merge commit %s\n"
-			"or update to an existing commit which has merged those changes"),
-			item->string, util->abbrev);
-		format_submodule_conflict_suggestion(&tmp);
-		strbuf_add(&msg, tmp.buf, tmp.len);
-		strbuf_reset(&tmp);
+		strbuf_addf(&tmp, _(" - go to submodule (%s), and either merge commit %s\n"
+				    "   or update to an existing commit which has merged those changes\n"),
+			    item->string, util->abbrev);
 	}
-	strbuf_add_separated_string_list(&subs, " ", csub);
-	strbuf_addstr(&tmp, _("come back to superproject and run:"));
-	strbuf_addf(&tmp, "\n\ngit add %s\n\n", subs.buf);
-	strbuf_addstr(&tmp, _("to record the above merge or update"));
-	format_submodule_conflict_suggestion(&tmp);
-	strbuf_add(&msg, tmp.buf, tmp.len);
-	strbuf_reset(&tmp);
 
-	strbuf_addstr(&tmp, _("resolve any other conflicts in the superproject"));
-	format_submodule_conflict_suggestion(&tmp);
-	strbuf_add(&msg, tmp.buf, tmp.len);
-	strbuf_reset(&tmp);
-
-	strbuf_addstr(&tmp, _("commit the resulting index in the superproject"));
-	format_submodule_conflict_suggestion(&tmp);
-	strbuf_add(&msg, tmp.buf, tmp.len);
+	/*
+	 * TRANSLATORS: This is a detailed message for resolving submodule
+	 * conflicts.  The first argument is string containing one step per
+	 * submodule.  The second is a space-separated list of submodule names.
+	 */
+	strbuf_addf(&msg,
+		    _("Recursive merging with submodules currently only supports trivial cases.\n"
+		      "Please manually handle the merging of each conflicted submodule.\n"
+		      "This can be accomplished with the following steps:\n"
+		      "%s"
+		      " - come back to superproject and run:\n\n"
+		      "      git add %s\n\n"
+		      "   to record the above merge or update\n"
+		      " - resolve any other conflicts in the superproject\n"
+		      " - commit the resulting index in the superproject\n"),
+		    tmp.buf, subs.buf);
 
 	printf("%s", msg.buf);
+
 	strbuf_release(&subs);
 	strbuf_release(&tmp);
 	strbuf_release(&msg);