Replace CtrlO with open command

This comit also makes it possible for a binding to auto-type the
beginning of a command into command mode.

Closes #450

cmd/micro/actions.go

@@ -704,15 +704,7 @@ func (v *View) Save(usePlugin bool) bool {
 	}
 	// If this is an empty buffer, ask for a filename
 	if v.Buf.Path == "" {
-		filename, canceled := messenger.Prompt("Filename: ", "Save", NoCompletion)
-		if !canceled {
-			// the filename might or might not be quoted, so unquote first then join the strings.
-			filename = strings.Join(SplitCommandArgs(filename), " ")
-			v.Buf.Path = filename
-			v.Buf.Name = filename
-		} else {
-			return false
-		}
+		v.SaveAs(false)
 	}
 	err := v.Buf.Save()
 	if err != nil {
@@ -743,7 +735,7 @@ func (v *View) Save(usePlugin bool) bool {
 
 // SaveAs saves the buffer to disk with the given name
 func (v *View) SaveAs(usePlugin bool) bool {
-	filename, canceled := messenger.Prompt("Filename: ", "Save", NoCompletion)
+	filename, canceled := messenger.Prompt("Filename: ", "", "Save", NoCompletion)
 	if !canceled {
 		// the filename might or might not be quoted, so unquote first then join the strings.
 		filename = strings.Join(SplitCommandArgs(filename), " ")
@@ -1101,19 +1093,13 @@ func (v *View) OpenFile(usePlugin bool) bool {
 	}
 
 	if v.CanClose() {
-		filename, canceled := messenger.Prompt("File to open: ", "Open", FileCompletion)
-		if canceled {
-			return false
+		input, canceled := messenger.Prompt("> ", "open ", "Open", CommandCompletion)
+		if !canceled {
+			HandleCommand(input)
+			if usePlugin {
+				return PostActionCall("OpenFile", v)
+			}
 		}
-		// the filename might or might not be quoted, so unquote first then join the strings.
-		filename = strings.Join(SplitCommandArgs(filename), " ")
-
-		v.Open(filename)
-
-		if usePlugin {
-			return PostActionCall("OpenFile", v)
-		}
-		return true
 	}
 	return false
 }
@@ -1291,7 +1277,7 @@ func (v *View) JumpLine(usePlugin bool) bool {
 	}
 
 	// Prompt for line number
-	linestring, canceled := messenger.Prompt("Jump to line # ", "LineNumber", NoCompletion)
+	linestring, canceled := messenger.Prompt("Jump to line # ", "", "LineNumber", NoCompletion)
 	if canceled {
 		return false
 	}
@@ -1354,7 +1340,7 @@ func (v *View) ShellMode(usePlugin bool) bool {
 		return false
 	}
 
-	input, canceled := messenger.Prompt("$ ", "Shell", NoCompletion)
+	input, canceled := messenger.Prompt("$ ", "", "Shell", NoCompletion)
 	if !canceled {
 		// The true here is for openTerm to make the command interactive
 		HandleShellCommand(input, true, true)
@@ -1371,7 +1357,7 @@ func (v *View) CommandMode(usePlugin bool) bool {
 		return false
 	}
 
-	input, canceled := messenger.Prompt("> ", "Command", CommandCompletion)
+	input, canceled := messenger.Prompt("> ", "", "Command", CommandCompletion)
 	if !canceled {
 		HandleCommand(input)
 		if usePlugin {

cmd/micro/command.go

@@ -49,6 +49,7 @@ func init() {
 		"Reload":    Reload,
 		"Cd":        Cd,
 		"Pwd":       Pwd,
+		"Open":      Open,
 	}
 }
 
@@ -100,6 +101,7 @@ func DefaultCommands() map[string]StrCommand {
 		"reload":   {"Reload", []Completion{NoCompletion}},
 		"cd":       {"Cd", []Completion{FileCompletion}},
 		"pwd":      {"Pwd", []Completion{NoCompletion}},
+		"open":     {"Open", []Completion{FileCompletion}},
 	}
 }
 
@@ -214,6 +216,18 @@ func Pwd(args []string) {
 	}
 }
 
+func Open(args []string) {
+	if len(args) > 0 {
+		filename := args[0]
+		// the filename might or might not be quoted, so unquote first then join the strings.
+		filename = strings.Join(SplitCommandArgs(filename), " ")
+
+		CurView().Open(filename)
+	} else {
+		messenger.Error("No filename")
+	}
+}
+
 func ToggleLog(args []string) {
 	buffer := messenger.getBuffer()
 	if CurView().Type != vtLog {

cmd/micro/messenger.go

@@ -198,7 +198,7 @@ const (
 
 // Prompt sends the user a message and waits for a response to be typed in
 // This function blocks the main loop while waiting for input
-func (m *Messenger) Prompt(prompt, historyType string, completionTypes ...Completion) (string, bool) {
+func (m *Messenger) Prompt(prompt, placeholder, historyType string, completionTypes ...Completion) (string, bool) {
 	m.hasPrompt = true
 	m.Message(prompt)
 	if _, ok := m.history[historyType]; !ok {
@@ -208,7 +208,9 @@ func (m *Messenger) Prompt(prompt, historyType string, completionTypes ...Comple
 	}
 	m.historyNum = len(m.history[historyType]) - 1
 
-	response, canceled := "", true
+	response, canceled := placeholder, true
+	m.response = response
+	m.cursorx = Count(placeholder)
 
 	RedrawAll()
 	for m.hasPrompt {

cmd/micro/runtime.go

@@ -403,7 +403,7 @@ func runtimeHelpColorsMd() (*asset, error) {
 	return a, nil
 }
 
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 func runtimeHelpCommandsMdBytes() ([]byte, error) {
 	return bindataRead(

runtime/help/commands.md

@@ -68,6 +68,8 @@ Here are the possible commands that you can use.
 
 * `pwd`: Print the current working directory.
 
+* `open filename`: Open a file in the current buffer.
+
 ---
 
 The following commands are provided by the default plugins: