CLI help output make kitty.conf a clickable URL

tools/cli/infrastructure.go

@@ -3,6 +3,7 @@ package cli
 import (
 	"fmt"
 	"os"
+	"path/filepath"
 	"regexp"
 	"strings"
 	"syscall"
@@ -15,6 +16,7 @@ import (
 	"github.com/spf13/pflag"
 
 	"kitty"
+	"kitty/tools/utils"
 )
 
 var RootCmd *cobra.Command
@@ -180,11 +182,37 @@ func website_url(doc string) string {
 var prettify_pat = regexp.MustCompile(":([a-z]+):`([^`]+)`")
 var ref_pat = regexp.MustCompile(`\s*<\S+?>`)
 
+func is_atty() bool {
+	return italic_fmt("") != ""
+}
+
+func hyperlink_for_path(path string, text string) string {
+	if !is_atty() {
+		return text
+	}
+	path = strings.ReplaceAll(utils.Abspath(path), string(os.PathSeparator), "/")
+	fi, err := os.Stat(path)
+	if err == nil && fi.IsDir() {
+		path = strings.TrimSuffix(path, "/") + "/"
+	}
+	host, err := os.Hostname()
+	if err != nil {
+		host = ""
+	}
+	return "\x1b]8;;file://" + host + path + "\x1b\\" + text + "\x1b]8;;\x1b\\"
+}
+
 func prettify(text string) string {
 	return ReplaceAllStringSubmatchFunc(prettify_pat, text, func(groups []string) string {
 		val := groups[2]
 		switch groups[1] {
-		case "file", "env", "envvar":
+		case "file":
+			if val == "kitty.conf" && is_atty() {
+				path := filepath.Join(utils.ConfigDir(), val)
+				val = hyperlink_for_path(path, val)
+			}
+			return italic_fmt(val)
+		case "env", "envvar":
 			return italic_fmt(val)
 		case "doc":
 			return website_url(val)
@@ -233,7 +261,7 @@ func show_usage(cmd *cobra.Command) error {
 	use := cmd.Use
 	idx := strings.Index(use, " ")
 	if idx > -1 {
-		use = use[idx + 1:]
+		use = use[idx+1:]
 	}
 	var parent_names []string
 	cmd.VisitParents(func(p *cobra.Command) {
@@ -274,7 +302,7 @@ func show_usage(cmd *cobra.Command) error {
 			defval := ""
 			switch flag.Value.Type() {
 			default:
-				if (flag.DefValue != "") {
+				if flag.DefValue != "" {
 					defval = fmt.Sprintf("[=%s]", italic_fmt(flag.DefValue))
 				}
 			case "bool":

tools/cmd/at/main.go

@@ -1,7 +1,6 @@
 package at
 
 import (
-
 	"github.com/spf13/cobra"
 
 	"kitty/tools/cli"
@@ -14,7 +13,7 @@ func EntryPoint(tool_root *cobra.Command) *cobra.Command {
 	var root = cli.CreateCommand(&cobra.Command{
 		Use:   "@ [global options] command [command options] [command args]",
 		Short: "Control kitty remotely",
-		Long:  "Control kitty by sending it commands. Set the allow_remote_control option in kitty.conf or use a password, for this to work.",
+		Long:  "Control kitty by sending it commands. Set the allow_remote_control option in :file:`kitty.conf` or use a password, for this to work.",
 	})
 	root.Annotations["options_title"] = "Global options"
 

tools/utils/paths.go

@@ -0,0 +1,87 @@
+package utils
+
+import (
+	"os"
+	"os/user"
+	"path/filepath"
+	"runtime"
+	"strings"
+)
+
+func Expanduser(path string) string {
+	if !strings.HasPrefix(path, "~") {
+		return path
+	}
+	home, err := os.UserHomeDir()
+	if err != nil {
+		usr, err := user.Current()
+		if err == nil {
+			home = usr.HomeDir
+		}
+	}
+	if err != nil || home == "" {
+		return path
+	}
+	if path == "~" {
+		return home
+	}
+	path = strings.ReplaceAll(path, string(os.PathSeparator), "/")
+	parts := strings.Split(path, "/")
+	if parts[0] == "~" {
+		parts[0] = home
+	} else {
+		uname := parts[0][1:]
+		if uname != "" {
+			u, err := user.Lookup(uname)
+			if err == nil && u.HomeDir != "" {
+				parts[0] = u.HomeDir
+			}
+		}
+	}
+	return strings.Join(parts, string(os.PathSeparator))
+}
+
+func Abspath(path string) string {
+	q, err := filepath.Abs(path)
+	if err == nil {
+		return q
+	}
+	return path
+}
+
+var config_dir string
+
+func ConfigDir() string {
+	if config_dir != "" {
+		return config_dir
+	}
+	if os.Getenv("KITTY_CONFIG_DIRECTORY") != "" {
+		config_dir = Abspath(Expanduser(os.Getenv("KITTY_CONFIG_DIRECTORY")))
+	} else {
+		var locations []string
+		if os.Getenv("XDG_CONFIG_HOME") != "" {
+			locations = append(locations, os.Getenv("XDG_CACHE_HOME"))
+		}
+		locations = append(locations, Expanduser("~/.config"))
+		if runtime.GOOS == "darwin" {
+			locations = append(locations, Expanduser("~/Library/Preferences"))
+		}
+		for _, loc := range locations {
+			if loc != "" {
+				q := filepath.Join(loc, "kitty")
+				if _, err := os.Stat(filepath.Join(q, "kitty.conf")); err == nil {
+					config_dir = q
+					break
+				}
+			}
+		}
+		for _, loc := range locations {
+			if loc != "" {
+				config_dir = filepath.Join(loc, "kitty")
+				break
+			}
+		}
+	}
+
+	return config_dir
+}