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zsh/.oh-my-zsh/plugins/emacs/emacsclient.sh

@@ -0,0 +1,38 @@
+#!/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" "${@:3}"
+fi
+
+emacsfun "$@"