Murmel Online REPL

Murmel is a Lisp interpreter/ compiler, see the Murmel Language Reference and the Murmel Default Library Reference (type (require "mlib") at the REPL to use it).

Sharable hyperlinks with Lisp code snippets can be generated using the Murmel Online REPL link generator.

This Murmel Online REPL is served from a static Webserver and runs completely in your browser, using jQuery 3.7.1 external link opens in a new window

, CheerpJ 3.0 (*) external link opens in a new window

and jQuery Terminal 2.38.0 external link opens in a new window

.

(*) CheerpJ is free to use for personal projects, most non-commercial applications, and for technical evaluations, see CheerpJ licensing external link opens in a new window

This REPL has an editable, searchable history with keyboard shortcuts:

Shift+Enter allows entering multi-line commands
CTRL+A or CTRL+E move to the start or end of a form respectively (or use Pos-1 or End)
CTRL+K erases from the current cursor position to the end of the current form
CTRL+L clears the screen
CTRL+R starts reverse history search, CTRL+G exits, Enter runs the search result, any arrow key transfers the search result to the REPL prompt
Within reverse history search:
- if the currently displayed history element is a single line: Up / Down moves within the history
- if you are in the middle of a multiline history element: Up / Down moves within the history element
- if you are in the first (last) line of a history element: Up / Down moves to the previous / next history element
- CTRL+Up / CTRL+Down will move to the previous or next history element even if the cursor currently is in the middle of a multiline history element