this post was submitted on 27 Nov 2023
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Org-mode tag right alignment (alien.top)
submitted 1 year ago by Nicolas-Rougier@alien.top to c/emacs
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Just found a quick way to have tags always right aligned, taking advantage of font-lock and display property.

(add-to-list 'font-lock-extra-managed-props 'display)
(font-lock-add-keywords 'org-mode
  `(("^.*?\\( \\)\\(:[[:alnum:]_@#%:]+:\\)$"
     (1 `(face nil
          display (space :align-to (- right ,(length (match-string 2)) 3)))
        prepend))) t)
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[–] whudwl@alien.top 1 points 1 year ago (1 children)

It seems this affects stuff like :PROPERTIES: as well

[–] llcc_reddit@alien.top 1 points 1 year ago (1 children)

Also not working well for multiple tags. The tags are wrapped into the second line.

[–] Nicolas-Rougier@alien.top 1 points 1 year ago (2 children)

Weird since the regex includes a space before the first ":". As for multitag, it is working properly for me.

[–] whudwl@alien.top 1 points 1 year ago

AHH. I see, my :PROPERTIES: is not indented. my org-adapt-indentation is set to nil.

[–] llcc_reddit@alien.top 1 points 1 year ago (1 children)

I found out that it's the non-English characters in tags that trigger the bug.

[–] Nicolas-Rougier@alien.top 1 points 1 year ago

Nice. And since org-string-width can return pixel width, it might adapted to proportional font as well.