From 79bec105b4b40a4d159f8613d34d93128c9c3a7d Mon Sep 17 00:00:00 2001
From: Vincent Woo <me@vincentwoo.com>
Date: Thu, 26 May 2016 20:13:32 -0700
Subject: [PATCH] [sublime] Implement smart backspace with multi-cursor support
---
keymap/sublime.js | 28 ++++++++++++++++++++++++++++
1 file changed, 28 insertions(+)
diff --git a/keymap/sublime.js b/keymap/sublime.js
index c1749e719..0da347a99 100644
--- a/keymap/sublime.js
+++ b/keymap/sublime.js
@@ -420,6 +420,34 @@
map[cK + ctrl + "Backspace"] = "delLineLeft";
+ cmds[map["Backspace"] = "smartBackspace"] = function(cm) {
+ if (cm.somethingSelected()) return CodeMirror.Pass;
+
+ cm.operation(function() {
+ var cursors = cm.listSelections();
+ var indentUnit = cm.getOption("indentUnit");
+
+ for (var i = cursors.length - 1; i >= 0; i--) {
+ var cursor = cursors[i].head;
+ var toStartOfLine = cm.getRange({line: cursor.line, ch: 0}, cursor);
+ var column = CodeMirror.countColumn(toStartOfLine, null, cm.getOption("tabSize"));
+
+ // Delete by one character by default
+ var deletePos = cm.findPosH(cursor, -1, "char", false);
+
+ if (toStartOfLine && !/\S/.test(toStartOfLine) && column % indentUnit == 0) {
+ var prevIndent = new Pos(cursor.line,
+ CodeMirror.findColumn(toStartOfLine, column - indentUnit, indentUnit));
+
+ // Smart delete only if we found a valid prevIndent location
+ if (prevIndent.ch != cursor.ch) deletePos = prevIndent;
+ }
+
+ cm.replaceRange("", deletePos, cursor, "+delete");
+ }
+ });
+ };
+
cmds[map[cK + ctrl + "K"] = "delLineRight"] = function(cm) {
cm.operation(function() {
var ranges = cm.listSelections();
--
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