Add raw command to view raw terminal esc codes

cmd/micro/buffer.go

@@ -158,7 +158,7 @@ func NewBuffer(reader io.Reader, size int64, path string) *Buffer {
 
 	InitLocalSettings(b)
 
-	if b.Settings["savecursor"].(bool) || b.Settings["saveundo"].(bool) {
+	if len(*flagStartPos) == 0 && (b.Settings["savecursor"].(bool) || b.Settings["saveundo"].(bool)) {
 		// If either savecursor or saveundo is turned on, we need to load the serialized information
 		// from ~/.config/micro/buffers
 		file, err := os.Open(configDir + "/buffers/" + EscapePath(b.AbsPath))

cmd/micro/command.go

@@ -57,6 +57,7 @@ func init() {
 		"TabSwitch":  TabSwitch,
 		"MemUsage":   MemUsage,
 		"Retab":      Retab,
+		"Raw":        Raw,
 	}
 }
 
@@ -113,6 +114,7 @@ func DefaultCommands() map[string]StrCommand {
 		"tabswitch":  {"TabSwitch", []Completion{NoCompletion}},
 		"memusage":   {"MemUsage", []Completion{NoCompletion}},
 		"retab":      {"Retab", []Completion{NoCompletion}},
+		"raw":        {"Raw", []Completion{NoCompletion}},
 	}
 }
 
@@ -203,6 +205,26 @@ func Retab(args []string) {
 	CurView().Retab(true)
 }
 
+func Raw(args []string) {
+	buf := NewBufferFromString("", "Raw events")
+
+	view := NewView(buf)
+	view.Buf.Insert(view.Cursor.Loc, "Warning: Showing raw event escape codes\n")
+	view.Buf.Insert(view.Cursor.Loc, "Use CtrlQ to exit\n")
+	view.Type = vtRaw
+	tab := NewTabFromView(view)
+	tab.SetNum(len(tabs))
+	tabs = append(tabs, tab)
+	curTab = len(tabs) - 1
+	if len(tabs) == 2 {
+		for _, t := range tabs {
+			for _, v := range t.views {
+				v.ToggleTabbar()
+			}
+		}
+	}
+}
+
 // TabSwitch switches to a given tab either by name or by number
 func TabSwitch(args []string) {
 	if len(args) > 0 {

cmd/micro/micro.go

@@ -253,7 +253,7 @@ func LoadAll() {
 	}
 }
 
-// Passing -version as a flag will have micro print out the version number
+// Command line flags
 var flagVersion = flag.Bool("version", false, "Show the version number and information")
 var flagStartPos = flag.String("startpos", "", "LINE,COL to start the cursor at when opening a buffer.")
 var flagConfigDir = flag.String("config-dir", "", "Specify a custom location for the configuration directory")

cmd/micro/vendor/github.com/zyedidia/tcell

@@ -1 +1 @@
-Subproject commit c92e80b717d7d911424a2c8394af863ceca4abf0
+Subproject commit 869faf86d0607cf067597dcb302bee36648ac7ce

cmd/micro/view.go

@@ -1,7 +1,9 @@
 package main
 
 import (
+	"fmt"
 	"os"
+	"reflect"
 	"strconv"
 	"strings"
 	"time"
@@ -21,6 +23,7 @@ var (
 	vtHelp    = ViewType{1, true, true}
 	vtLog     = ViewType{2, true, true}
 	vtScratch = ViewType{3, false, true}
+	vtRaw     = ViewType{4, true, true}
 )
 
 // The View struct stores information about a view into a buffer.
@@ -496,6 +499,20 @@ func (v *View) SetCursor(c *Cursor) bool {
 
 // HandleEvent handles an event passed by the main loop
 func (v *View) HandleEvent(event tcell.Event) {
+	if v.Type == vtRaw {
+		v.Buf.Insert(v.Cursor.Loc, reflect.TypeOf(event).String()[7:])
+		v.Buf.Insert(v.Cursor.Loc, fmt.Sprintf(": %q\n", event.EscSeq()))
+
+		switch e := event.(type) {
+		case *tcell.EventKey:
+			if e.Key() == tcell.KeyCtrlQ {
+				v.Quit(true)
+			}
+		}
+
+		return
+	}
+
 	// This bool determines whether the view is relocated at the end of the function
 	// By default it's true because most events should cause a relocate
 	relocate := true
@@ -506,7 +523,7 @@ func (v *View) HandleEvent(event tcell.Event) {
 	case *tcell.EventRaw:
 		for key, actions := range bindings {
 			if key.keyCode == -1 {
-				if e.EscapeCode() == key.escape {
+				if e.EscSeq() == key.escape {
 					for _, c := range v.Buf.cursors {
 						ok := v.SetCursor(c)
 						if !ok {
@@ -712,8 +729,8 @@ func (v *View) DisplayView() {
 		v.leftCol = 0
 	}
 
-	if v.Type == vtLog {
-		// Log views should always follow the cursor...
+	if v.Type == vtLog || v.Type == vtRaw {
+		// Log or raw views should always follow the cursor...
 		v.Relocate()
 	}
 

runtime/help/commands.md

@@ -80,6 +80,11 @@ Here are the possible commands that you can use.
 * `retab`: Replaces all leading tabs with spaces or leading spaces with tabs
    depending on the value of `tabstospaces`.
 
+* `raw`: Micro will open a new tab and show the escape sequence for every event
+   it receives from the terminal. This shows you what micro actually sees from
+   the terminal and helps you see which bindings aren't possible and why. This
+   is most useful for debugging keybindings.
+
 ---
 
 The following commands are provided by the default plugins: