> For the complete documentation index, see [llms.txt](https://cyr1en.gitbook.io/commandprompter/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://cyr1en.gitbook.io/commandprompter/configuration/command-prompter-configuration/argument-regex.md).

# Argument-Regex

Despite its legacy name, `Argument-Regex` is not evaluated as a regular expression. CommandPrompter trims the value and uses only its first and last characters as the opening and closing prompt delimiters. The middle characters are ignored.

```yaml
Argument-Regex: <.*?>
```

* **Type:** String of at least three characters
* **Default:** `<.*?>`
* **Effective delimiters:** `<` and `>`

Examples:

| Value        | Effective syntax |
| ------------ | ---------------- |
| `<.*?>`      | `<prompt>`       |
| `{.*?}`      | `{prompt}`       |
| `[.*?]`      | `[prompt]`       |
| `(anything)` | `(prompt)`       |

Each delimiter must be one character. An invalid value logs an error and falls back to `< >`. Run `/cmdp reload` after changing it.

In command text, prefix a delimiter with a backslash when it should be literal rather than start or end a tag. This escaping belongs in the command being parsed, not in the `Argument-Regex` configuration value.


---

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