configurable fontification of identifiers_with_underscores, etc.

[seabadger]

Underscore characters ('_') that occurs inside a word-like string (e.g. foo_bar, foo_bar_baz) is being interpreted as markup, and fontified accordingly. From what I've read, there's no 'standard' behavior for this, i.e. different implementations make different choices. Making this configurable would allow a given user to use their preferred behavior.

Expected Behavior

Underscore characters in the middle of a word treated as literal underscores (i.e., as if '_' was used).

Actual Behavior

A line like
foo_bar some words baz_bam
gets rendered with italicized text between underscores

Steps to Reproduce

Type the line
foo_bar some words baz_bam
into a markdown buffer.

Backtrace

N/A

Software Versions

• Markdown Mode: 2.6-alpha
• Emacs: 28.2
• OS: macOS Monterey 12.6.3

[syohex]

#448 (comment)

Please see the above comment. markdown-mode implements original markdown specification and it says you need to escape underscores in such case. So you need to write like foo\_bar some words baz\_bam or use gfm-mode instead of markdown-mode.