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Cannot start Emacs from Finder on macOS Ventura
From: |
Eric Swenson |
Subject: |
Cannot start Emacs from Finder on macOS Ventura |
Date: |
Mon, 9 Jan 2023 23:11:51 +0000 |
I recently decided to update my Homebrew-installed emacs, and because only
version 28.2 was available, I decided to try the emacs-nightly HomeBrew cask.
Installation went find, and I’m able to invoke the GUI emacs by simply
executing “emacs” in a zsh shell. When I do, it comes up in the dock, and I
can set the “Keep in dock” menu item from the dock icon’s Options context menu.
If I exit emacs, however, I’m unable to launch it via the dock, nor by
clicking on /Applications/Emacs.app in Finder. The only way I appear to be
able to start it is via the command line.
It turns out that “emacs” is an alias:
➜ ~ which emacs
emacs: aliased to /Users/eswenson/.oh-my-zsh/plugins/emacs/emacsclient.sh
--no-wait
This script looks like this:
#!/bin/sh
emacsfun() {
local cmd frames
# Build the Emacs Lisp command to check for suitable frames
# See
https://www.gnu.org/software/emacs/manual/html_node/elisp/Frames.html#index-framep
case "$*" in
*-t*|*--tty*|*-nw*) cmd="(memq 't (mapcar 'framep (frame-list)))" ;; # if !=
nil, there are tty frames
*) cmd="(delete 't (mapcar 'framep (frame-list)))" ;; # if != nil, there are
graphical terminals (x, w32, ns)
esac
# Check if there are suitable frames
frames="$(emacsclient -a '' -n -e "$cmd" 2>/dev/null)"
# Only create another X frame if there isn't one present
if [ -z "$frames" -o "$frames" = nil ]; then
emacsclient --alternate-editor "" --create-frame "$@"
return $?
fi
emacsclient --alternate-editor "" "$@"
}
# Adapted from
https://github.com/davidshepherd7/emacs-read-stdin/blob/master/emacs-read-stdin.sh
# If the second argument is - then write stdin to a tempfile and open the
# tempfile. (first argument will be `--no-wait` passed in by the plugin.zsh)
if [ $# -ge 2 -a "$2" = "-" ]; then
# Create a tempfile to hold stdin
tempfile="$(mktemp --tmpdir emacs-stdin-$USERNAME.XXXXXXX 2>/dev/null \
|| mktemp -t emacs-stdin-$USERNAME)" # support BSD mktemp
# Redirect stdin to the tempfile
cat - > "$tempfile"
# Reset $2 to the tempfile so that "$@" works as expected
set -- "$1" "$tempfile" "${@:3}"
fi
emacsfun "$@"
So “emacsclient –create-frame” is able to start emacs.
And emacsclient is:
➜ ~ which emacsclient
/usr/local/bin/emacsclient
➜ ~ ls -l /usr/local/bin/emacsclient
lrwxr-xr-x 1 eswenson admin 54 Jan 9 14:50 /usr/local/bin/emacsclient@ ->
/Applications/Emacs.app/Contents/MacOS/bin/emacsclient
So why is it that neither clicking on /Application/Emacs.app in Finder, or
using Spotlight, or clicking on the dock icon for Emacs will bring up Emacs?
I’m running macOS Ventura. I’m using an emacs-nightly Homebrew from this
date/time: 2023-01-06_00-09-32.
-- Eric (KC6EJS)
- Cannot start Emacs from Finder on macOS Ventura,
Eric Swenson <=