Entering "'s" in the gnuplot buffer triggers a memory leak.

[kickingvegas]

Description

Entering 's in the gnuplot repl will trigger a memory leak.

Environment

GNU Emacs 30.1 (build 2, aarch64-apple-darwin24.3.0, NS appkit-2575.40 Version 15.3.1 (Build 24D70)) of 2025-02-27
Package: gnuplot 20250613.1223

Steps to Reproduce

1. Run M-x run-gnuplot
2. Enter test's in the repl prompt.

Expected Result

1. Nothing happens.

Actual Result

1. Emacs is wedged and an external force quit is required.

[minad]

I can reproduce this. It seems that there is a bug in the Gnuplot context parser as can be seen when running the profiler, see gnuplot-context--tokenize. I can interrupt the computation however by pressing C-g. Patches and help would be welcome!