Add tabsToSpaces option

README.md

@@ -122,10 +122,13 @@ Micro has a few options which you can set:
 * colorscheme
 * tabsize
 * syntax
+* tabsToSpaces
 
-To set an option run Ctrl-e to execute a command, and type `set option value`, so to set the tabsize to 8 it would be `set tabsize 8`.
+To set an option run Ctrl-e to execute a command, and type `set option value`, so to set the tabsize to 8 it would be `set tabsize 8`. The default is 4.
 
-The syntax option can simply be on or off, so for example to turn syntax highlighting off, run `set syntax off`.
+The syntax option can simply be on or off, so for example to turn syntax highlighting off, run `set syntax off`. The default is on.
+
+The tabsToSpaces option is on or off. It specifies whether to use spaces instead of tabs or not. The default is off.
 
 The colorscheme can be selected from all the files in the `ConfigDir/colorschemes/` directory. Micro comes by default with three colorschemes:
 

cmd/micro/help.go

@@ -63,6 +63,9 @@ tabsize: sets the tab size to 'option'
 
 syntax: turns syntax on or off
 	default value: 'on'
+
+tabsToSpaces: use spaces instead of tabs
+	default value: 'off'
 `
 
 // DisplayHelp displays the help txt

cmd/micro/settings.go

@@ -12,14 +12,15 @@ import (
 var settings Settings
 
 // All the possible settings
-var possibleSettings = []string{"colorscheme", "tabsize", "autoindent", "syntax"}
+var possibleSettings = []string{"colorscheme", "tabsize", "autoindent", "syntax", "tabsToSpaces"}
 
 // The Settings struct contains the settings for micro
 type Settings struct {
-	Colorscheme string `json:"colorscheme"`
-	TabSize     int    `json:"tabsize"`
-	AutoIndent  bool   `json:"autoindent"`
-	Syntax      bool   `json:"syntax"`
+	Colorscheme  string `json:"colorscheme"`
+	TabSize      int    `json:"tabsize"`
+	AutoIndent   bool   `json:"autoindent"`
+	Syntax       bool   `json:"syntax"`
+	TabsToSpaces bool   `json:"tabsToSpaces"`
 }
 
 // InitSettings initializes the options map and sets all options to their default values
@@ -55,10 +56,11 @@ func WriteSettings(filename string) error {
 // DefaultSettings returns the default settings for micro
 func DefaultSettings() Settings {
 	return Settings{
-		Colorscheme: "default",
-		TabSize:     4,
-		AutoIndent:  true,
-		Syntax:      true,
+		Colorscheme:  "default",
+		TabSize:      4,
+		AutoIndent:   true,
+		Syntax:       true,
+		TabsToSpaces: false,
 	}
 }
 
@@ -92,6 +94,15 @@ func SetOption(view *View, args []string) {
 				}
 				LoadSyntaxFiles()
 				view.buf.UpdateRules()
+			} else if option == "tabsToSpaces" {
+				if value == "on" {
+					settings.TabsToSpaces = true
+				} else if value == "off" {
+					settings.TabsToSpaces = false
+				} else {
+					messenger.Error("Invalid value for " + option)
+					return
+				}
 			}
 			err := WriteSettings(filename)
 			if err != nil {

cmd/micro/view.go

@@ -424,8 +424,15 @@ func (v *View) HandleEvent(event tcell.Event) {
 				v.cursor.DeleteSelection()
 				v.cursor.ResetSelection()
 			}
-			v.eh.Insert(v.cursor.Loc(), "\t")
-			v.cursor.Right()
+			if settings.TabsToSpaces {
+				v.eh.Insert(v.cursor.Loc(), Spaces(settings.TabSize))
+				for i := 0; i < settings.TabSize; i++ {
+					v.cursor.Right()
+				}
+			} else {
+				v.eh.Insert(v.cursor.Loc(), "\t")
+				v.cursor.Right()
+			}
 			v.UpdateLines(v.cursor.y, v.cursor.y)
 		case tcell.KeyCtrlS:
 			v.Save()