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by TacticalCoder 1286 days ago
I agree with you.

I've got my Emacs set up to display in "bold, fluo foregound and a dark background underlined by a pink line" (yes, literally that obnoxious) any character which is not part of a list of characters I consider to be acceptable. And it's configured to show any "zero width" character as if it had a width. So any "invisible character" as well as any "invisible zero width character" does appear as a black square, underlined with a pink line.

And that for any buffer/file.
1 comments
enchiridion 1286 days ago
Can you share that config? Sounds useful!
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TacticalCoder 1286 days ago
Sure... For a start I have my scratch buffer showing a few Unicode characters, one trailing spacing character on purpose (to be sure I can see it's highlighted), a zero-width-non-joiner 0x200C and an Hangul filler 0x3164 (may add some from TFA btw). This helps me quickly verify, upon startup, that my setup is working.

I configured all that literally years ago so I don't remember where's what but here's what I've got:

    ;; probably cargo-culted from somewhere
    (update-glyphless-char-display 'glyphless-char-display-control '((format-control . empty-box) (no-font . empty-box)))
    
    ;; See https://emacs.stackexchange.com/questions/65108
    (set-face-background 'glyphless-char "purple")
And then I've got this too (requires markchars.el):

    (markchars-global-mode)
With:

    (defface markchars-heavy
      '((t :underline "magenta"))
      "Heavy face for `markchars-mode' char marking."
      :group 'markchars)
It should get you started.

(and, yup, I know it's overkill but I like it that way)

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