[Bug] doom-modeline-def-segment results in void variable

[sebastiaanspeck]

Thank you for the bug report

• I am using the latest version of doom-modeline related packages.
• I checked FAQ.
• You may also try reproduce the issue using clean environment and minimal configurations with
  the command emacs -Q.

Bug description

When using (doom-modeline-def-segment) outside of doom-modeline, it triggers the warning void variable. A good example is Alexander-Miller/treemacs#1049. Maybe we need some help for this issue?

Steps to reproduce

Define a new segment outside of doom-modeline.
The name for the segment creates the warning void variable

Expected behavior

Defining a new segment outside of doom-modeline shouldn’t trigger the warning

OS

Windows

Emacs Version

29

Emacs Configurations

No response

Error callstack

No response

Anything else

No response

[sebastiaanspeck]

When using (doom-modeline-def-segment 'name …), the segment can’t be used/found when creating the modeline:

Debugger entered--Lisp error: (error "'name is not a valid segment")
  error("%s is not a valid segment" 'name)
  doom-modeline--prepare-segments(('name))
  doom-modeline-def-modeline(custom (bar " " major-mode) ('name))

Looking at the doom-modeline-var-alist, the segment is in the alist:
(('name. doom-modeline-segment--\'name)

When using (doom-modeline-def-segment “name” …), you can’t find/reference the segment anymore.
doom-modeline-def-modeline(custom (bar " " major-mode) '(“name”) results in a segment with the string “name” instead of the segment.

Looking at the doom-modeline-var-alist, the segment with “name” looks okay, apart of the name:
((”name”. doom-modeline-segment--name)

[seagle0128]

Have you byte-compiled doom-modeline?

[sebastiaanspeck]

Yes, I did

[seagle0128]

I believe doom-modeline-def-segment does work. I tried on Windows, Linux and macOS, with Emacs 28 and 29. I also tested with emacs -Q, and it works well. Please provide all details to reproduce the issue. I didn't catch the points according to the descriptions above. void variable or name is not a valid segment? What's the exact problem and backtrace?

[seagle0128]

See Alexander-Miller/treemacs#1049 (comment). Closing it.