Add show command to show the value of an option

README.md

@@ -30,6 +30,7 @@ To see more screenshots of micro, showcasing all of the default colorschemes, se
 * Cross platform (It should work on all the platforms Go runs on)
     * Note that while Windows is supported, there are still some bugs that need to be worked out
 * Plugin system (plugins are written in Lua)
+* Persistent undo
 * Automatic linting and error notifications
 * Syntax highlighting (for over [75 languages](runtime/syntax)!)
 * Colorscheme support
@@ -73,7 +74,7 @@ Make sure that you have Go version 1.5 or greater (Go 1.4 will work if your vers
 go get -u github.com/zyedidia/micro/...
 ```
 
-### Clipboard support
+### Linux clipboard support
 
 On Linux, clipboard support requires 'xclip' or 'xsel' command to be installed.
 
@@ -85,6 +86,13 @@ sudo apt-get install xclip
 
 If you don't have xclip or xsel, micro will use an internal clipboard for copy and paste, but it won't work with external applications.
 
+### Windows colors
+
+Many of the Windows terminals don't support more than 16 colors, which means
+that micro's default colorscheme won't look very good. You can either set
+the colorscheme to `simple`, or download a better terminal emulator, like
+mintty or cmder.
+
 # Usage
 
 Once you have built the editor, simply start it by running `micro path/to/file.txt` or simply `micro` to open an empty buffer.

cmd/micro/autocomplete.go

@@ -92,6 +92,15 @@ func HelpComplete(input string) (string, []string) {
 	return chosen, suggestions
 }
 
+func contains(s []string, e string) bool {
+	for _, a := range s {
+		if a == e {
+			return true
+		}
+	}
+	return false
+}
+
 // OptionComplete autocompletes options
 func OptionComplete(input string) (string, []string) {
 	var suggestions []string
@@ -102,7 +111,7 @@ func OptionComplete(input string) (string, []string) {
 		}
 	}
 	for option := range localSettings {
-		if strings.HasPrefix(option, input) {
+		if strings.HasPrefix(option, input) && !contains(suggestions, option) {
 			suggestions = append(suggestions, option)
 		}
 	}

cmd/micro/command.go

@@ -27,6 +27,7 @@ var commands map[string]Command
 var commandActions = map[string]func([]string){
 	"Set":      Set,
 	"SetLocal": SetLocal,
+	"Show":     Show,
 	"Run":      Run,
 	"Bind":     Bind,
 	"Quit":     Quit,
@@ -70,6 +71,7 @@ func DefaultCommands() map[string]StrCommand {
 	return map[string]StrCommand{
 		"set":      {"Set", []Completion{OptionCompletion, NoCompletion}},
 		"setlocal": {"SetLocal", []Completion{OptionCompletion, NoCompletion}},
+		"show":     {"Show", []Completion{OptionCompletion, NoCompletion}},
 		"bind":     {"Bind", []Completion{NoCompletion}},
 		"run":      {"Run", []Completion{NoCompletion}},
 		"quit":     {"Quit", []Completion{NoCompletion}},
@@ -168,6 +170,7 @@ func NewTab(args []string) {
 // Set sets an option
 func Set(args []string) {
 	if len(args) < 2 {
+		messenger.Error("Not enough arguments")
 		return
 	}
 
@@ -177,8 +180,10 @@ func Set(args []string) {
 	SetOptionAndSettings(option, value)
 }
 
+// SetLocal sets an option local to the buffer
 func SetLocal(args []string) {
 	if len(args) < 2 {
+		messenger.Error("Not enough arguments")
 		return
 	}
 
@@ -191,10 +196,27 @@ func SetLocal(args []string) {
 	}
 }
 
+// Show shows the value of the given option
+func Show(args []string) {
+	if len(args) < 1 {
+		messenger.Error("Please provide an option to show")
+		return
+	}
+
+	option := GetOption(args[0])
+
+	if option == nil {
+		messenger.Error(args[0], " is not a valid option")
+		return
+	}
+
+	messenger.Message(option)
+}
+
 // Bind creates a new keybinding
 func Bind(args []string) {
-	if len(args) != 2 {
+	if len(args) < 2 {
-		messenger.Error("Incorrect number of arguments")
+		messenger.Error("Not enough arguments")
 		return
 	}
 	BindKey(args[0], args[1])

cmd/micro/runtime.go

@@ -375,7 +375,7 @@ func runtimeHelpColorsMd() (*asset, error) {
 	return a, nil
 }
 
-var _runtimeHelpCommandsMd = []byte("\x1f\x8b\x08\x00\x00\x09\x6e\x88\x00\xff\x8c\x54\xc1\xb2\xe4\x34\x0c\xbc\xe7\x2b\xba\x1e\x87\x05\xea\xcd\x7c\xc0\xdc\x28\x2e\x50\x45\x51\xc0\xee\x85\x9b\x9d\x44\x99\xb8\xc6\xb1\xb2\x96\x9c\xd9\xe1\xeb\x29\xd9\x99\x3c\xd8\xc7\x81\x5b\x62\xb5\xd4\x2d\xa9\xed\x6f\xf0\x1b\x8b\x84\x3e\x12\x06\x5e\x16\x9f\x46\xe9\xba\x3f\xb9\x60\xf0\x09\xf4\x85\x86\xa2\x04\xfb\x1c\x83\x72\x7e\x62\xd0\x3f\xb0\x66\x12\x09\xe9\x0a\xf7\xa3\xe6\x78\x22\x87\x89\x63\xe4\x3b\xd5\xa8\xce\x47\xc1\x73\xf7\x13\x65\x82\xcf\x54\x4f\xd7\xaf\xf9\xa0\xb3\x57\x3c\x76\xce\x22\x74\xee\xba\xef\xe1\x3e\x97\xa0\xee\x82\xdf\x4b\x50\xc1\x12\x86\xcc\xed\x5c\xfc\x46\xee\x82\x8f\x7e\x23\x69\x34\x25\x67\x4a\x8a\xbe\x4c\x13\xe5\x06\xca\xb4\x46\x3f\x10\x5e\x84\x7c\x1e\xe6\x17\xbc\x6c\x3e\x16\x7a\xc1\x14\xfd\x55\xdc\x05\x9f\xe6\x20\xb8\x87\x18\xf1\x84\xba\x06\x75\xb8\x07\x9d\xe1\x2a\xde\x9d\xd1\x01\xf8\x34\x13\x5c\xcb\xac\x6d\xf0\xaa\x81\x93\x8f\x67\x0b\xfe\xa0\x50\x2b\xb6\x72\x48\xfa\x6a\x8a\x32\x21\x08\x38\xc5\x07\x38\x51\xa5\xbc\xc0\x0d\xee\x15\xf7\x39\x0c\x33\x28\xf9\x3e\x92\xc0\x0d\x33\x0d\x37\x87\x85\x47\xaa\x3c\x2d\xec\xe5\x26\x08\x93\x4d\xe4\xc3\x88\x18\x6e\x04\x65\xac\x94\x27\xce\x4b\xed\x78\x97\xbc\x58\xd7\xe4\x87\x19\x1a\x16\xea\xac\xc2\xaf\xac\xd4\xe6\x79\xb4\xb3\x14\x51\xf4\x04\x8f\xcd\xc7\x30\x22\xd3\x95\xbe\x9c\x81\x9f\xa7\xaa\x8e\xa7\x5a\xd2\xe7\x6b\xb1\x7a\x62\x55\x46\x26\x41\x62\xc5\xec\x37\xdb\xfe\x03\xb2\xfa\x81\x04\x21\x21\xe8\x6b\xdd\xd5\xe2\x1f\xe0\x25\x68\xcd\xfe\x5c\x58\x49\xf6\xfd\x90\xee\x03\x42\x9b\xe1\x05\x42\xda\x56\xb5\x9f\x2b\xb7\xd0\x19\x1f\xa9\x99\xc2\xb5\x88\x38\xcc\x14\x57\x28\xaf\x61\x30\x25\x13\x67\x78\xc4\x20\x6a\x42\x77\xd0\xe1\x15\x21\x3d\x38\x23\x0f\x3e\xfe\x5f\x62\x54\x74\x7c\xe0\xdb\xba\xa5\x90\xfe\x69\x24\xe3\x6d\x5e\xfa\x6e\x37\x53\x49\x90\xf9\xb4\xfb\xd5\x5d\x90\x4b\x6a\x65\xaf\x61\x23\x8b\x51\x8c\xc7\xd5\xd8\x8b\xf5\x7e\xb8\x5d\x33\x97\x34\x9e\xab\x7f\xac\xea\x0e\xf9\x20\xe0\xa2\x6b\xd1\x66\xc0\x9e\x30\x06\x59\xa3\x7f\x50\xcd\xb6\xad\xc4\x90\x08\xf7\x99\x6c\xde\x98\x42\x0a\x32\x93\x18\x6f\x0a\xe9\xda\x54\xf5\x21\x8d\xb8\xd1\x03\x7e\xb0\xde\xdc\x05\x43\x26\xaf\x24\xf0\x76\x6c\x61\xbb\x9d\x53\xe6\xa5\xc2\x94\x77\xe4\xdb\xd4\x85\x86\x36\x50\x4e\x26\xef\x2d\x4b\xe0\x7b\xde\xa8\x8e\x7f\x61\xf3\x73\x9a\xd8\xce\x4c\xb3\xb9\xeb\x46\x0f\x81\x75\xeb\xf7\x0a\x76\x2d\xfc\xe6\x43\x34\x6b\x37\x81\x9b\xac\xb1\xaa\x8f\x94\xfc\x62\xeb\xe0\x95\x0c\x8a\x8d\xb2\x06\x5b\x57\x43\xb4\x0b\x77\xe0\xce\x66\xcd\xc4\x47\x22\x42\x35\xe5\x9a\x79\x0b\x23\x8d\xaf\xef\x0b\xd8\x6d\x5b\x29\xd1\xd8\x4a\xd9\x73\xb5\xac\xfa\xd8\xb7\x58\xc5\xcc\xef\xc4\x88\x95\xf6\xf2\xd4\xe9\xd0\x17\x3d\x14\xce\x9c\xc3\x5f\x9c\xf4\x8d\x22\x89\x92\x1f\xc1\x93\x69\xf9\x5a\x41\xa5\x50\xdf\xbf\x6f\xf6\xcd\x25\x16\xb2\xf5\x7a\x24\xba\x43\x7d\x7f\xee\xba\xd3\xe9\xd4\x75\xe6\x8e\xf6\x74\xda\xbe\x8e\x57\xd1\x26\xfa\xec\xf9\xf9\xa2\x8e\x34\xf9\x12\x15\x6b\x2c\xd7\x90\xe4\x52\x79\x63\x48\xf6\x50\xfe\x12\x92\xfe\xeb\x3d\xac\x84\xb6\x41\xca\x99\xf3\x7e\x3b\xaf\x3c\x2d\x86\xfe\xa3\x24\xd4\x6f\x70\x7a\x97\xf5\x84\x86\x65\xe5\xac\x72\xc0\xf7\xff\xff\x4e\xf9\x3b\x00\x00\xff\xff\x19\x8b\xa2\xea\x4a\x06\x00\x00")
+var _runtimeHelpCommandsMd = []byte("\x1f\x8b\x08\x00\x00\x09\x6e\x88\x00\xff\x8c\x54\xc1\x8e\xe4\x34\x10\xbd\xe7\x2b\x9e\x86\xc3\x02\x9a\xe9\x0f\xe8\x1b\xe2\x02\x12\x42\xc0\xee\x85\x5b\x9c\xa4\xd2\xb1\xda\x71\x65\x5d\xe5\xf4\x36\x5f\x8f\xca\x76\x67\x76\x67\x38\x70\x4b\xec\xe7\x57\xaf\xfc\x5e\xf9\x3b\xfc\xc1\x22\x7e\x08\x84\x91\xd7\xd5\xc5\x49\xba\xee\x6f\xce\x18\x5d\x04\x7d\xa1\x31\x2b\xc1\x3e\x27\xaf\x9c\x1e\x18\x0c\x77\x6c\x89\x44\x7c\xbc\xa0\xff\x59\x53\x78\xa1\x1e\x33\x87\xc0\x37\x2a\xbb\xba\x1c\x84\xa7\xee\x17\x4a\x04\x97\xa8\xac\x6e\x6f\xeb\x41\x17\xa7\xb8\xb7\x9a\x59\xe8\xd4\x75\x3f\xa2\xff\x9c\xbd\xf6\x67\xfc\x99\xbd\x0a\x56\x3f\x26\xae\xeb\xe2\x76\xea\xcf\xf8\xe8\x76\x92\x5a\x26\xa7\x44\x51\x31\xe4\x79\xa6\x54\x41\x89\xb6\xe0\x46\xc2\x93\x90\x4b\xe3\xf2\x84\xa7\xdd\x85\x4c\x4f\x98\x83\xbb\x48\x7f\xc6\xa7\xc5\x0b\x6e\x3e\x04\x3c\xa0\x7d\x85\xf6\xb8\x79\x5d\xd0\x17\x7c\x7f\x42\x07\xe0\xd3\x42\xe8\xeb\xc9\xd2\x06\x6f\xea\x39\xba\x70\xb2\xcd\x9f\x14\x6a\x64\x1b\xfb\xa8\xcf\xa6\x28\x11\xbc\x80\x63\xb8\x83\x23\x95\x92\x67\xf4\x63\xff\x8c\xdb\xe2\xc7\x05\x14\xdd\x10\x48\xd0\x8f\x0b\x8d\xd7\x1e\x2b\x4f\x54\xea\xd4\x6d\x27\x57\x81\x9f\xed\x46\x3e\x4c\x08\xfe\x4a\x50\xc6\x46\x69\xe6\xb4\x96\x8e\x9b\xe4\xd5\xba\x26\x37\x2e\x50\xbf\x52\x67\x0c\xbf\xb3\x52\xbd\xcf\xa3\x9d\x35\x8b\x62\x20\x38\xec\x2e\xf8\x09\x89\x2e\xf4\xe5\x04\xfc\x3a\x17\x75\x3c\x17\x4a\x97\x2e\xd9\xf8\xc4\x58\x26\x26\x41\x64\xc5\xe2\x76\x73\xff\x0e\xd9\xdc\x48\x02\x1f\xe1\xf5\xb9\x78\xb5\xba\x3b\x78\xf5\x5a\x4e\x7f\xce\xac\x24\xcd\x1f\xd2\x76\x41\xa8\x77\x78\x86\x90\x56\xab\xda\xba\x72\xdd\x3a\xe1\x23\xd5\x50\xf4\x75\x47\x7a\x2c\x14\x36\x28\x6f\x7e\x34\x25\x33\x27\x38\x04\x2f\x6a\x42\x1b\xe8\xc8\x8a\x90\x1e\x35\x03\x8f\x2e\xfc\xdf\xc2\x28\xe8\x70\xc7\xf7\xc5\x25\x1f\xbf\x0e\x92\xd5\xad\x59\xfa\xa1\xb1\x2f\x7c\x6b\x0c\xc6\xb9\xf0\xed\xdb\xe0\x55\xca\x76\x91\x17\xbf\x53\x6c\xe8\x96\xc5\x1c\x21\xcb\x4b\x8b\x7b\x7f\x46\xca\x51\xbe\xc2\xca\x42\x21\x1c\x93\xd5\xb4\x0c\x6e\xbc\x5e\x12\xe7\x38\x9d\x4a\xfc\x4c\x54\x83\x7c\x10\x70\xd6\x2d\x6b\xcd\xef\x40\x98\xbc\x6c\xc1\xdd\xa9\x9c\x36\x53\x83\x8f\x84\xdb\x42\x66\x17\x66\x1f\xbd\x2c\x24\x56\x37\xfa\x78\xa9\xaa\x06\x1f\x27\x5c\xe9\x0e\x37\xb6\xc6\xc6\x44\x4e\x49\xe0\x6c\xd9\xb6\x6d\xb8\xe7\xc4\x6b\x81\x29\x37\xe4\xab\x69\x42\x63\xf5\x83\xa3\xc9\x7b\x3d\x25\x70\x03\xef\x54\xdc\x5b\xd9\xc6\x21\xce\x6c\x6b\xa6\xd9\xc2\x79\xa5\xbb\xc0\xba\x75\x8d\xc1\xa6\xca\xed\xce\x07\x9b\x8c\x2a\x70\x97\x2d\x14\xf5\x81\xa2\x5b\xcd\x4d\xde\xc8\xa0\xd8\x29\xa9\x37\xb7\x2b\xa2\xce\xeb\x81\x3b\x59\xb2\x23\x1f\x07\xe1\x4b\xa6\xb7\xc4\xbb\x9f\x68\x7a\x7e\x4f\x60\xc3\xba\x51\xa4\xa9\x52\xd9\x6b\xb7\x6e\x7a\x6f\x21\x28\x62\x96\x77\x62\xc4\xa8\x9d\x3c\x74\xf6\x18\xb2\x1e\x0a\x17\x4e\xfe\x1f\x8e\xfa\x5a\x22\x8a\x92\x9b\xc0\xb3\x69\x79\xab\xa0\x94\x50\x37\xbc\x6f\xf6\x35\x25\xb6\x65\xf6\x3a\x44\xba\x41\xdd\x70\xea\xba\x97\x97\x97\xae\xb3\x74\xd4\x97\xd7\xfc\x3a\x1e\x55\xbb\xd1\x47\xcf\x8f\x07\x79\xa2\xd9\xe5\xa0\xd8\x42\xbe\xf8\x28\xe7\x52\x37\xf8\x68\xef\xec\x6f\x3e\xea\x37\xa9\x2e\x05\xcd\x41\x4a\x89\x53\x1b\xee\x0b\xcf\xab\xa1\xff\xca\x11\xe5\x1b\x1c\xdf\x9d\x7a\x40\xfd\xba\x71\x52\x39\xe0\xed\xff\xbf\x8f\xfc\x1b\x00\x00\xff\xff\x15\x3d\x5d\xe1\x89\x06\x00\x00")
 
 func runtimeHelpCommandsMdBytes() ([]byte, error) {
 	return bindataRead(

runtime/help/commands.md

@@ -21,6 +21,8 @@ Here are the possible commands that you can use.
 * `setlocal option value`: sets the option to value locally (only in the current
    buffer).
 
+* `show option`: shows the current value of the given option.
+
 * `run sh-command`: runs the given shell command in the background. The 
    command's output will be displayed in one line when it finishes running.