Add option to disable use of a the primary clipboard

Closes #544

cmd/micro/cursor.go

@@ -32,7 +32,9 @@ func (c *Cursor) Goto(b Cursor) {
 // CopySelection copies the user's selection to either "primary" or "clipboard"
 func (c *Cursor) CopySelection(target string) {
 	if c.HasSelection() {
-		clipboard.WriteAll(c.GetSelection(), target)
+		if target != "primary" || c.buf.Settings["useprimary"].(bool) {
+			clipboard.WriteAll(c.GetSelection(), target)
+		}
 	}
 }
 

cmd/micro/settings.go

@@ -175,33 +175,34 @@ func GetOption(name string) interface{} {
 // Note that colorscheme is a global only option
 func DefaultGlobalSettings() map[string]interface{} {
 	return map[string]interface{}{
-		"autoindent":   true,
+		"autoindent":     true,
 		"keepautoindent": false,
-		"autosave":     false,
-		"colorcolumn":  float64(0),
-		"colorscheme":  "default",
-		"cursorline":   true,
-		"eofnewline":   false,
-		"rmtrailingws": false,
-		"ignorecase":   false,
-		"indentchar":   " ",
-		"infobar":      true,
-		"ruler":        true,
-		"savecursor":   false,
-		"saveundo":     false,
-		"scrollspeed":  float64(2),
-		"scrollmargin": float64(3),
-		"softwrap":     false,
-		"splitRight":   true,
-		"splitBottom":  true,
-		"statusline":   true,
-		"syntax":       true,
-		"tabsize":      float64(4),
-		"tabstospaces": false,
+		"autosave":       false,
+		"colorcolumn":    float64(0),
+		"colorscheme":    "default",
+		"cursorline":     true,
+		"eofnewline":     false,
+		"rmtrailingws":   false,
+		"ignorecase":     false,
+		"indentchar":     " ",
+		"infobar":        true,
+		"ruler":          true,
+		"savecursor":     false,
+		"saveundo":       false,
+		"scrollspeed":    float64(2),
+		"scrollmargin":   float64(3),
+		"softwrap":       false,
+		"splitRight":     true,
+		"splitBottom":    true,
+		"statusline":     true,
+		"syntax":         true,
+		"tabsize":        float64(4),
+		"tabstospaces":   false,
 		"pluginchannels": []string{
 			"https://raw.githubusercontent.com/micro-editor/plugin-channel/master/channel.json",
 		},
 		"pluginrepos": []string{},
+		"useprimary":  true,
 	}
 }
 
@@ -209,28 +210,29 @@ func DefaultGlobalSettings() map[string]interface{} {
 // Note that filetype is a local only option
 func DefaultLocalSettings() map[string]interface{} {
 	return map[string]interface{}{
-		"autoindent":   true,
+		"autoindent":     true,
 		"keepautoindent": false,
-		"autosave":     false,
-		"colorcolumn":  float64(0),
-		"cursorline":   true,
-		"eofnewline":   false,
-		"rmtrailingws": false,
-		"filetype":     "Unknown",
-		"ignorecase":   false,
-		"indentchar":   " ",
-		"ruler":        true,
-		"savecursor":   false,
-		"saveundo":     false,
-		"scrollspeed":  float64(2),
-		"scrollmargin": float64(3),
-		"softwrap":     false,
-		"splitRight":   true,
-		"splitBottom":  true,
-		"statusline":   true,
-		"syntax":       true,
-		"tabsize":      float64(4),
-		"tabstospaces": false,
+		"autosave":       false,
+		"colorcolumn":    float64(0),
+		"cursorline":     true,
+		"eofnewline":     false,
+		"rmtrailingws":   false,
+		"filetype":       "Unknown",
+		"ignorecase":     false,
+		"indentchar":     " ",
+		"ruler":          true,
+		"savecursor":     false,
+		"saveundo":       false,
+		"scrollspeed":    float64(2),
+		"scrollmargin":   float64(3),
+		"softwrap":       false,
+		"splitRight":     true,
+		"splitBottom":    true,
+		"statusline":     true,
+		"syntax":         true,
+		"tabsize":        float64(4),
+		"tabstospaces":   false,
+		"useprimary":     true,
 	}
 }
 

runtime/help/options.md

@@ -103,17 +103,17 @@ Here are the options that you can set:
 
 * `softwrap`: should micro wrap lines that are too long to fit on the screen
 
-    default value: `off`
+	default value: `off`
 
 * `splitRight`: when a vertical split is created, should it be created to the right of
    the current split?
 
-    default value: `on`
+	default value: `on`
 
 * `splitBottom`: when a horizontal split is created, should it be created below the
    current split?
 
-    default value: `on`
+	default value: `on`
 
 * `autosave`: micro will save the buffer every 8 seconds automatically.
    Micro also will automatically save and quit when you exit without asking.
@@ -127,13 +127,18 @@ Here are the options that you can set:
    metadata about the given plugin. See the `Plugin Manager` section of the `plugins` help topic
    for more information.
 
-    default value: `https://github.com/micro-editor/plugin-channel`
+	default value: `https://github.com/micro-editor/plugin-channel`
 
 * `pluginrepos`: contains all the 'repositories' micro's plugin manager will search for
    plugins in. A repository consists of a `repo.json` file which contains metadata for a
    single plugin.
 
-    default value: ` `
+	default value: ` `
+
+* `useprimary` (only useful on Linux): defines whether or not micro will use the primary clipboard to copy selections
+   in the background. This does not affect the normal clipboard using Ctrl-C and Ctrl-V.
+
+	default value: `on`
 
 ---