The Find/Replace feature does not work

[Ephellon]

Prerequisites

• [x] Put an X between the brackets on this line if you have done all of the following:
  • Yep — Reproduced the problem in Safe Mode: https://flight-manual.atom.io/hacking-atom/sections/debugging/#using-safe-mode
  • Does not fix — Followed all applicable steps in the debugging guide: https://flight-manual.atom.io/hacking-atom/sections/debugging/
  • Found no solutions — Checked the FAQs on the message board for common solutions: https://discuss.atom.io/c/faq
  • Does not match: atom/atom#4154, atom/atom#16390, atom/atom#6963, or atom/atom#7936 — Checked that your issue isn't already filed: https://github.com/issues?utf8=✓&q=is%3Aissue+user%3Aatom
  • Assuming problem in core package (N/A) — Checked that there is not already an Atom package that provides the described functionality: https://atom.io/packages

Description

When using the Ctrl + F or Ctrl + Shift + F (Find & Replace) with Regex enabled, the feature fails.

Steps to Reproduce

1. Press Ctrl + F or Ctrl + Shift + F
2. Use a valid Regex in the "Find" area, such as --\b or (--)\b
3. Use a valid string in the "Replace" area, such as ? or $1?
4. Notice that nothing will be replaced, or the replacement will be literal
   • such as --apple → $1?apple; it should be --?apple

Expected behavior:

Replace the current buffer(s) with the valid replacement string.

Actual behavior:

Either replaces the buffer(s) will literals, or does not replace anything.

Reproduces how often:

100% of the time: Safe Mode, fresh install, etc.

Versions

OS	Atom	Node	APM	Electron	Chrome
Windows 10 x64	1.43.0	v10.11.0	2.4.3	4.2.7	69.0.3497.128

Additional Information

[Ephellon]

Example of what I was trying to do:

Original index.html:

...
<meta --user="title. last-name"/>
...

Desired output:

...
<meta ?user="title. last-name"/>
...

Options used (Find & Replace):

• [x] Use Regex
• [ ] Match Case
• [ ] Only In Selection
• [ ] Whole Word

Find in current buffer: --\b Replace in current buffer: ?

[Ephellon]

I can't just use -- due to HTML comments <!-- ... -->

[Eli-Tarrago]

I think this is a problem with your regex matching instead of the atom editor.

Try this regex match: ([^<!](-)\1+)

[Ephellon]

Hi, just saw this. It's not just that particular RegEx, I can put in others and still get $1 (literal) instead of the match

[Ephellon]

I'll post more examples when I get home

[Ephellon]

Duplicate of #1110

[smtlaissezfaire]

Is there a way to downgrade this package? This is a show-stopping bug for me.

FYI:

https://gist.github.com/smtlaissezfaire/aea970f853853182afe539b2c505fb0d