Add check flag for search and replace

cmd/micro/command.go

@@ -147,14 +147,35 @@ func HandleCommand(input string, view *View) {
 			}
 			found = true
 			if strings.Contains(flags, "c") {
-				// 	// The 'check' flag was used
-				// 	if messenger.YesNoPrompt("Perform replacement?") {
-				// 		view.eh.Replace(match[0], match[1], replace)
-				// 	} else {
-				// 		continue
-				// 	}
+				// The 'check' flag was used
+				Search(search, view, true)
+				view.Relocate()
+				Redraw(view)
+				choice, canceled := messenger.YesNoPrompt("Perform replacement? (y,n)")
+				if canceled {
+					if view.cursor.HasSelection() {
+						view.cursor.SetLoc(view.cursor.curSelection[0])
+						view.cursor.ResetSelection()
+					}
+					messenger.Reset()
+					return
+				}
+				if choice {
+					view.cursor.DeleteSelection()
+					view.eh.Insert(match[0], replace)
+					view.cursor.ResetSelection()
+					messenger.Reset()
+				} else {
+					if view.cursor.HasSelection() {
+						searchStart = view.cursor.curSelection[1]
+					} else {
+						searchStart = ToCharPos(view.cursor.x, view.cursor.y, view.buf)
+					}
+					continue
+				}
+			} else {
+				view.eh.Replace(match[0], match[1], replace)
 			}
-			view.eh.Replace(match[0], match[1], replace)
 		}
 		if !found {
 			messenger.Message("Nothing matched " + search)

cmd/micro/messenger.go

@@ -87,7 +87,7 @@ func (m *Messenger) Error(msg ...interface{}) {
 }
 
 // YesNoPrompt asks the user a yes or no question (waits for y or n) and returns the result
-func (m *Messenger) YesNoPrompt(prompt string) bool {
+func (m *Messenger) YesNoPrompt(prompt string) (bool, bool) {
 	m.Message(prompt)
 
 	for {
@@ -98,12 +98,15 @@ func (m *Messenger) YesNoPrompt(prompt string) bool {
 
 		switch e := event.(type) {
 		case *tcell.EventKey:
-			if e.Key() == tcell.KeyRune {
+			switch e.Key() {
+			case tcell.KeyRune:
 				if e.Rune() == 'y' {
-					return true
+					return true, false
 				} else if e.Rune() == 'n' {
-					return false
+					return false, false
 				}
+			case tcell.KeyCtrlC, tcell.KeyCtrlQ, tcell.KeyEscape:
+				return false, true
 			}
 		}
 	}

runtime/help/help.md

@@ -67,10 +67,12 @@ Here are the possible commands that you can use.
 * `quit`: Quits micro.
 * `save`: Saves the current buffer.
 
-* `replace "search" "value"`: This will replace `search` with `value`.
+* `replace "search" "value" flags`: This will replace `search` with `value`. The `flags` are optional.
+   At this point, there is only one flag: `c`, which enables `check` mode which asks if you'd like
+   to perform the replacement each time
 
-    Note that `search` must be a valid regex.  If one of the arguments
-    does not have any spaces in it, you may omit the quotes.
+   Note that `search` must be a valid regex.  If one of the arguments
+   does not have any spaces in it, you may omit the quotes.
 
 * `set option value`: sets the option to value. Please see the next section for a list of options you can set.