feat: init for Nushell

docs/docs/install-prompt.mdx

@@ -146,28 +146,25 @@ exec fish
 </TabItem>
 <TabItem value="nu">
 
-Set the prompt and restart nu shell:
+:::warning
+Oh My Posh requires Nushell >= 0.60.0
+:::
 
-**Nu < 0.32.0**
+Edit `$nu.config-path` and add the following lines at the bottom.
 
 ```bash
-config set prompt  "= `{{$(oh-my-posh print primary | str collect)}}`"
+oh-my-posh init nu
+source ~/.oh-my-posh.nu
 ```
 
-**Nu >= 0.32.0**
+If you want to save the initialization script elsewhere, replace the lines above with these:
 
 ```bash
-config set prompt  "(oh-my-posh print primary | str collect)"
+oh-my-posh init nu --print | save /mylocation/myscript.nu
+source /mylocation/myscript.nu
 ```
 
-**Nu >= 0.60.0**
-
-```bash
-let-env PROMPT_COMMAND = { oh-my-posh print primary }
-let-env PROMPT_COMMAND_RIGHT = { oh-my-posh print right }
-```
-
-Restart nu shell for the changes to take effect.
+Restart Nushell for the changes to take effect.
 
 </TabItem>
 </Tabs>

src/cli/init.go

@@ -16,7 +16,7 @@ var (
 	print bool
 
 	initCmd = &cobra.Command{
-		Use:   "init [bash|zsh|fish|powershell|pwsh|cmd] --config ~/.mytheme.omp.json",
+		Use:   "init [bash|zsh|fish|powershell|pwsh|cmd|nu] --config ~/.mytheme.omp.json",
 		Short: "Initialize your shell and configuration",
 		Long: `Allows to initialize your shell and configuration.
 See the documentation to initialize your shell: https://ohmyposh.dev/docs/prompt.`,
@@ -27,6 +27,7 @@ See the documentation to initialize your shell: https://ohmyposh.dev/docs/prompt
 			"powershell",
 			"pwsh",
 			"cmd",
+			"nu",
 		},
 		Args: cobra.OnlyValidArgs,
 		Run: func(cmd *cobra.Command, args []string) {

src/engine/engine.go

@@ -214,7 +214,7 @@ func (e *Engine) print() string {
 		prompt := fmt.Sprintf("PS1=\"%s\"", strings.ReplaceAll(e.string(), "\"", "\"\""))
 		prompt += fmt.Sprintf("\nRPROMPT=\"%s\"", e.rprompt)
 		return prompt
-	case shell.PWSH, shell.PWSH5, shell.BASH, shell.PLAIN:
+	case shell.PWSH, shell.PWSH5, shell.BASH, shell.PLAIN, shell.NU:
 		if e.rprompt == "" || !e.canWriteRPrompt() || e.Plain {
 			break
 		}
@@ -334,7 +334,7 @@ func (e *Engine) PrintExtraPrompt(promptType ExtraPromptType) string {
 			return prompt
 		}
 		return str
-	case shell.PWSH, shell.PWSH5, shell.CMD, shell.BASH, shell.FISH:
+	case shell.PWSH, shell.PWSH5, shell.CMD, shell.BASH, shell.FISH, shell.NU:
 		str, _ := e.Writer.String()
 		return str
 	}

src/shell/constants.go

@@ -7,5 +7,6 @@ const (
 	FISH  = "fish"
 	PWSH5 = "powershell"
 	CMD   = "cmd"
+	NU    = "nu"
 	PLAIN = "shell"
 )

src/shell/init.go

@@ -2,6 +2,7 @@ package shell
 
 import (
 	_ "embed"
+	"path/filepath"
 
 	"fmt"
 	"oh-my-posh/environment"
@@ -25,6 +26,9 @@ var zshInit string
 //go:embed scripts/omp.lua
 var cmdInit string
 
+//go:embed scripts/omp.nu
+var nuInit string
+
 const (
 	noExe = "echo \"Unable to find Oh My Posh executable\""
 )
@@ -58,6 +62,9 @@ func Init(env environment.Environment) string {
 		return fmt.Sprintf("(@(&\"%s\" init %s --config=\"%s\" --print) -join \"`n\") | Invoke-Expression", executable, shell, env.Flags().Config)
 	case ZSH, BASH, FISH, CMD:
 		return PrintInit(env)
+	case NU:
+		createNuInit(env)
+		return ""
 	default:
 		return fmt.Sprintf("echo \"No initialization script available for %s\"", shell)
 	}
@@ -81,6 +88,8 @@ func PrintInit(env environment.Environment) string {
 		return getShellInitScript(executable, configFile, fishInit)
 	case CMD:
 		return getShellInitScript(executable, configFile, cmdInit)
+	case NU:
+		return getShellInitScript(executable, configFile, nuInit)
 	default:
 		return fmt.Sprintf("echo \"No initialization script available for %s\"", shell)
 	}
@@ -92,6 +101,19 @@ func getShellInitScript(executable, configFile, script string) string {
 	return script
 }
 
+func createNuInit(env environment.Environment) {
+	initPath := filepath.Join(env.Home(), ".oh-my-posh.nu")
+	f, err := os.OpenFile(initPath, os.O_RDWR|os.O_CREATE|os.O_TRUNC, 0755)
+	if err != nil {
+		return
+	}
+	_, err = f.WriteString(PrintInit(env))
+	if err != nil {
+		return
+	}
+	_ = f.Close()
+}
+
 func ConsoleBackgroundColor(env environment.Environment, backgroundColorTemplate string) string {
 	if len(backgroundColorTemplate) == 0 {
 		return backgroundColorTemplate

src/shell/scripts/omp.nu

@@ -0,0 +1,15 @@
+let-env POWERLINE_COMMAND = 'oh-my-posh'
+let-env POSH_THEME = '::CONFIG::'
+let-env PROMPT_INDICATOR = ""
+# By default displays the right prompt on the first line
+# making it annoying when you have a multiline prompt
+# making the behavior different compared to other shells
+let-env PROMPT_COMMAND_RIGHT = {''}
+
+# PROMPTS
+let-env PROMPT_MULTILINE_INDICATOR = (^::OMP:: print secondary $"--config=($env.POSH_THEME)" --shell=nu)
+
+let-env PROMPT_COMMAND = {
+    let width = (term size -c | get columns | into string)
+    ^::OMP:: print primary $"--config=($env.POSH_THEME)" $"--execution-time=($env.CMD_DURATION_MS)" $"--error=($env.LAST_EXIT_CODE)" $"--terminal-width=($width)"
+}