gnuplot / Bugs / #2858 gnuplot_svg.js cannot create JSON with settings

A portable, multi-platform, command-line driven graphing utility

#2858 gnuplot_svg.js cannot create JSON with settings

Milestone: None

Status: closed-cannot-reproduce

Owner: nobody

Labels: JavaScript (1)

Priority:

Updated: 6 days ago

Created: 2026-02-17

Creator: Anonymous

Private: No

If an SVG file with mouse is created, embedded into a web page and then opened in a browser, parseSettings() in gnuplot_svg() in gnuplot_svg.js tries to convert the commented JavaScript with statements line gnuplot_svg.setting = (value); into JSON.

However, the comment fragment contains more newlines than expected and after all regexes are applied has double commas, commas in the beginning and commas in the end; causing JSON.parse() to fail, breaking all subsequent JavaScript.

I would like to submit a patch fixing this, and for this purpose creating this bug.

Discussion

Ethan Merritt - 2026-02-20

I am not able to reproduce this. Is your browser not able to display the SVG on-line demos?
https://gnuplot.sourceforge.net/demo_svg_6.0/

What O/S and browser are you using?
I would be happy to look a patch, but it will be hard to test and evaluate if I can't reproduce the problem.

If you would like to refer to this comment somewhere else in this project, copy and paste the following link:

Ethan Merritt - 6 days ago

status: open --> closed-cannot-reproduce

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gnuplot_svg.js cannot create JSON with settings

A portable, multi-platform, command-line driven graphing utility

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#2858 gnuplot_svg.js cannot create JSON with settings

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