From 0a172100d76e530e3b76643ea061bcb9793e7e0c Mon Sep 17 00:00:00 2001
From: Johannes Schindelin <johannes.schindelin@gmx.de>
Date: Wed, 13 Apr 2016 14:08:09 +0200
Subject: [PATCH] sequencer (rebase -i): implement the short commands

For users' convenience, most rebase commands can be abbreviated, e.g.
'p' instead of 'pick' and 'x' instead of 'exec'. Let's teach the
sequencer to handle those abbreviated commands just fine.

Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de>
---
 sequencer.c | 36 ++++++++++++++++++++++--------------
 1 file changed, 22 insertions(+), 14 deletions(-)

diff --git a/sequencer.c b/sequencer.c
index 6c5c602061..f1e29762f4 100644
--- a/sequencer.c
+++ b/sequencer.c
@@ -710,20 +710,23 @@ enum todo_command {
 	TODO_NOOP
 };
 
-static const char *todo_command_strings[] = {
-	"pick",
-	"revert",
-	"edit",
-	"fixup",
-	"squash",
-	"exec",
-	"noop"
+static struct {
+	char c;
+	const char *str;
+} todo_command_info[] = {
+	{ 'p', "pick" },
+	{ 0,   "revert" },
+	{ 'e', "edit" },
+	{ 'f', "fixup" },
+	{ 's', "squash" },
+	{ 'x', "exec" },
+	{ 0,   "noop" }
 };
 
 static const char *command_to_string(const enum todo_command command)
 {
-	if (command < ARRAY_SIZE(todo_command_strings))
-		return todo_command_strings[command];
+	if (command < ARRAY_SIZE(todo_command_info))
+		return todo_command_info[command].str;
 	die("Unknown command: %d", command);
 }
 
@@ -1125,12 +1128,17 @@ static int parse_insn_line(struct todo_item *item, const char *bol, char *eol)
 		return 0;
 	}
 
-	for (i = 0; i < ARRAY_SIZE(todo_command_strings); i++)
-		if (skip_prefix(bol, todo_command_strings[i], &bol)) {
+	for (i = 0; i < ARRAY_SIZE(todo_command_info); i++)
+		if (skip_prefix(bol, todo_command_info[i].str, &bol)) {
 			item->command = i;
 			break;
 		}
-	if (i >= ARRAY_SIZE(todo_command_strings))
+		else if (bol[1] == ' ' && *bol == todo_command_info[i].c) {
+			bol++;
+			item->command = i;
+			break;
+		}
+	if (i >= ARRAY_SIZE(todo_command_info))
 		return -1;
 
 	if (item->command == TODO_NOOP) {
@@ -1325,7 +1333,7 @@ static int walk_revs_populate_todo(struct todo_list *todo_list,
 {
 	enum todo_command command = opts->action == REPLAY_PICK ?
 		TODO_PICK : TODO_REVERT;
-	const char *command_string = todo_command_strings[command];
+	const char *command_string = todo_command_info[command].str;
 	struct commit *commit;
 
 	if (prepare_revs(opts))