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I've tried to create a tags table for my assembler project using:

etags --language=none --regex="/[ \t]*\.\([^: \t]+\)/\1/i" *.asm

Which does work to a degree, and indeed when I load the TAGS file into Emacs, I see all the tags created just fine (from assembly labels).

My problem arises when I try and use M-. to search for a specific tag. It only shows me a very small subset of the tags in the *completions* buffer, despite all the tags seemingly present in the TAGS file.

Here's an example of what I'm trying to match:

.t0 DCB 0
.t1 DCB 0
.t2 DCB 0
.t4 DCB 0

Yet when I do M-., only the t0 tag will be listed in *completions*. If I manually enter t1 it can jump straight to it!

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  • What version of Emacs are you using? Are you using the etags program that comes with that version?
    – Dmitry
    Commented Sep 3, 2015 at 21:00
  • 24.5.1, and yeah, using the etags program that comes with it :(
    – Dave F
    Commented Sep 4, 2015 at 20:20
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    I have no idea about results for asm code, but in general be aware that Exuberant Ctags is a thing that exists, and (like GNU ctags) it produces Emacs-compatible TAGS files when given a -e flag. In some cases Exuberant Ctags gives significantly better results.
    – phils
    Commented Sep 6, 2015 at 23:06

1 Answer 1

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Thank you. I've reproduced it in the current master and pushed a fix: 770db45d6769.

If you don't build Emacs from Git, you can try applying this patch to your currently installed version.

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