Added OutdentLine action

cmd/micro/actions.go

@@ -610,6 +610,31 @@ func (v *View) IndentSelection(usePlugin bool) bool {
 	return false
 }
 
+// OutdentLine moves the current line back one indentation
+func (v *View) OutdentLine(usePlugin bool) bool {
+	if usePlugin && !PreActionCall("OutdentLine", v) {
+		return false
+	}
+
+	if v.Cursor.HasSelection() {
+		return false
+	}
+	
+	for x := 0; x < len(v.Buf.IndentString()); x++ {
+		if len(GetLeadingWhitespace(v.Buf.Line(v.Cursor.Y))) == 0 {
+			break
+		}
+		v.Buf.Remove(Loc{0, v.Cursor.Y}, Loc{1, v.Cursor.Y})
+		v.Cursor.X -= 1
+	}
+	v.Cursor.Relocate()
+
+	if usePlugin {
+		return PostActionCall("OutdentLine", v)
+	}
+	return true
+}
+
 // OutdentSelection takes the current selection and moves it back one indent level
 func (v *View) OutdentSelection(usePlugin bool) bool {
 	if usePlugin && !PreActionCall("OutdentSelection", v) {

cmd/micro/bindings.go

@@ -56,6 +56,7 @@ var bindingActions = map[string]func(*View, bool) bool{
 	"MoveLinesDown":       (*View).MoveLinesDown,
 	"IndentSelection":     (*View).IndentSelection,
 	"OutdentSelection":    (*View).OutdentSelection,
+	"OutdentLine":         (*View).OutdentLine,
 	"Paste":               (*View).Paste,
 	"PastePrimary":        (*View).PastePrimary,
 	"SelectAll":           (*View).SelectAll,
@@ -386,7 +387,7 @@ func DefaultBindings() map[string]string {
 		"Alt-CtrlH":      "DeleteWordLeft",
 		"Alt-Backspace":  "DeleteWordLeft",
 		"Tab":            "IndentSelection,InsertTab",
-		"Backtab":        "OutdentSelection",
+		"Backtab":        "OutdentSelection,OutdentLine",
 		"CtrlO":          "OpenFile",
 		"CtrlS":          "Save",
 		"CtrlF":          "Find",