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For a certain application, I would like to start up emacsclient, but with a slightly smaller font. I can do it for a running emacs by eval'ing:

(set-face-attribute 'default nil :height 90)

But how to do it with command-line arguments just for the frame opened by emacsclient? The -F flag looks promising, but I'm not sure of the syntax.

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The -F flag takes an alist (short for association list), which is a list where each element is a cons cell of the form (parameter . value). One of the available parameters is font, so to specify e.g. "Consolas 12", you'd say

emacsclient -F '((font . "Consolas 12"))'
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  • Thanks, rpluim. That answers the question. Is there a way to say something like, the default font at a smaller size?
    – Daniel Doherty
    Commented Feb 9, 2020 at 19:54
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    The only way I see to get that is if you define a fontset based on the default font, but at a smaller size, and then use that in the font specification.
    – rpluim
    Commented Feb 10, 2020 at 9:19

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