Invalid JSON warning from 16colo.rs bookmark

[jcubic]

Issue summary

There is some kind of error when processing ANSI art and using the get_inherit_style inside nested_formatting.

Expected behavior

No warnings, processing ANSI art has no issues

Actual behavior

Warning in console is visible when processing text at the bottom of the artwork

Steps to reproduce

1. Open https://16colo.rs/pack/icon0896/GR-UNTY.ANS
2. Run the bookmark: https://github.com/jcubic/terminal-bookmarks/blob/master/16colors.js

[jcubic]

The issue was that the code used split(';') on formatting but the formatting had HTML entities so it tried to parse JSON (last object of formatting) as part of the text.