From 3959d98535b1a3fa61d45a457cce23aa7569b942 Mon Sep 17 00:00:00 2001 From: Tomi Ollila Date: Wed, 6 Jan 2016 21:04:03 +0200 Subject: [PATCH] devel/emacs: add devel/try-emacs-mua devel/try-emacs-mua provides an easy way to try and experiment with the notmuch emacs client distributed in emacs subdirectory of the notmuch source tree. try-emacs-mua starts a new emacs process and if initial checks pass *scratch* buffer is filled with information of how to begin. Normal emacs command line arguments can be used, like -q or -Q. These arguments are appended verbatim to the starting emacs process. If the emacs version in use is smaller than 24.4, special care is taken to ensure that notmuch*.elc files older than corresponding .el files are not loaded. Since emacs 24.4, setting `load-prefer-newer' variable takes care of this. --- devel/try-emacs-mua | 157 ++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 157 insertions(+) create mode 100755 devel/try-emacs-mua diff --git a/devel/try-emacs-mua b/devel/try-emacs-mua new file mode 100755 index 00000000..b0a62c25 --- /dev/null +++ b/devel/try-emacs-mua @@ -0,0 +1,157 @@ +#!/bin/sh +:; set -x; exec "${EMACS:-emacs}" --debug-init --load "$0" "$@"; exit +;; +;; Try the notmuch emacs client located in ../emacs/ directory +;; +;; Run this without arguments; emacs window opens with some usage information +;; +;; Authors: Tomi Ollila +;; +;; http://www.emacswiki.org/emacs/EmacsScripts was a useful starting point... +;; +;; Licence: GPLv3+ +;; + +(message "Starting '%s'" load-file-name) + +(set-buffer "*scratch*") + +(setq initial-buffer-choice nil + inhibit-startup-screen t) + +(when (featurep 'notmuch) + (insert " +Notmuch has been loaded to this emacs (during processing of the init file) +which means it is (most probably) loaded from different source than expected. + +Please run \"" (file-name-nondirectory load-file-name) +"\" with '-q' (or '-Q') as an argument, to disable +processing of the init file -- you can load it after emacs has started\n +exit emacs (y or n)? ") + (if (y-or-n-p "exit emacs") + (kill-emacs) + (error "Stopped reading %s" load-file-name))) + +(let ((pdir (file-name-directory + (directory-file-name (file-name-directory load-file-name))))) + (unless (file-exists-p (concat pdir "emacs/notmuch-lib.el")) + (insert "Cannot find notmuch-emacs source directory +while looking at: " pdir "emacs\n\nexit emacs (y or n)? ") + (if (y-or-n-p "exit emacs") + (kill-emacs) + (error "Stopped reading %s" load-file-name))) + (setq try-notmuch-source-directory (directory-file-name pdir) + try-notmuch-emacs-directory (concat pdir "emacs/") + load-path (cons try-notmuch-emacs-directory load-path))) + +;; they say advice doesn't work for primitives (functions from c source) +;; well, these 'before' advice works for emacs 23.1 - 24.5 (at least) +;; ...and for our purposes 24.3 is enough (there is no load-prefer-newer there) +;; note also that the old, "obsolete" defadvice mechanism was used, but that +;; is the only one available for emacs 23 and 24 up to 24.3. + +(if (boundp 'load-prefer-newer) + (defadvice require (before before-require activate) + (unless (featurep feature) + (message "require: %s" feature))) + ;; else: special require "short-circuit"; after load feature is provided... + ;; ... in notmuch sources we always use require and there are no loops + (defadvice require (before before-require activate) + (unless (featurep feature) + (message "require: %s" feature) + (let ((name (symbol-name feature))) + (if (and (string-match "^notmuch" name) + (file-newer-than-file-p + (concat try-notmuch-emacs-directory name ".el") + (concat try-notmuch-emacs-directory name ".elc"))) + (load (concat try-notmuch-emacs-directory name ".el") nil nil t t) + ))))) + +(insert "Found notmuch emacs client in " try-notmuch-emacs-directory "\n") + +(let ((notmuch-path (executable-find "notmuch"))) + (insert "Notmuch CLI executable " + (if notmuch-path (concat "is " notmuch-path) "not found!") "\n")) + +(condition-case err +;; "opportunistic" load-prefer-newer -- will be effective since emacs 24.4 + (let ((load-prefer-newer t) + (force-load-messages t)) + (require 'notmuch)) + ;; specifying `debug' here lets the debugger run + ;; if `debug-on-error' is non-nil. + ((debug error) + (let ((error-message-string (error-message-string err))) + (insert "\nLoading notmuch failed: " error-message-string "\n") + (message "Loading notmuch failed: %s" error-message-string) + (insert "See *Messages* buffer for more information.\n") + (if init-file-user + (message "Hint: %s -q (or -Q) may help" load-file-name)) + (pop-to-buffer "*Messages*") + (error "Stopped reading %s" load-file-name)))) + +(insert " +Go to the end of the following lines and type C-x C-e to evaluate +(or C-j which is shorter but inserts evaluation results into buffer) + +To \"disable\" mail sending, evaluate +* (setq message-send-mail-function (lambda () t)) +") + +(if (file-exists-p (concat try-notmuch-source-directory "/notmuch")) + (insert " +To use accompanied notmuch binary from the same source, evaluate +* (setq exec-path (cons \"" try-notmuch-source-directory "\" exec-path)) +Note: Evaluating the above may be followed by unintended database +upgrade and getting back to old version may require dump & restore. +")) + +(if init-file-user ;; nil, if '-q' or '-Q' is given, but no '-u' 'USER' + (insert " +Your init file was processed during emacs startup. If you want to test +notmuch emacs mail client without your emacs init file interfering, Run\n\"" +(file-name-nondirectory load-file-name) "\" with '-q' (or '-Q') as an argument. +") + (let ((emacs-init-file-name) (notmuch-init-file-name)) + ;; determining init file name in startup.el/command-line is too complicated + ;; to be duplicated here; these 3 file names covers most of the users + (mapc (lambda (fn) (if (file-exists-p fn) (setq emacs-init-file-name fn))) + '("~/.emacs.d/init.el" "~/.emacs" "~/.emacs.el")) + (setq notmuch-init-file-name "~/.emacs.d/notmuch-config.el") + (unless (file-exists-p notmuch-init-file-name) + (setq notmuch-init-file-name nil)) + (if (and emacs-init-file-name notmuch-init-file-name) + (insert " +If you want to load your initialization files now, evaluate\n* (progn") + (if (or emacs-init-file-name notmuch-init-file-name) + (insert " +If you want to load your initialization file now, evaluate\n*"))) + (if emacs-init-file-name + (insert " (load \"" emacs-init-file-name "\")")) + (if notmuch-init-file-name + (insert " (load \"" notmuch-init-file-name "\")")) + (if (and emacs-init-file-name notmuch-init-file-name) + (insert ")")) + (if (or emacs-init-file-name notmuch-init-file-name) + (insert "\n"))) + (if (>= emacs-major-version 24) + (insert " +If you want to use packages (e.g. company from elpa) evaluate +* (progn (require 'package) (package-initialize)) +"))) + +(insert " +To start notmuch (hello) screen, evaluate +* (notmuch-hello)") + +(add-hook 'emacs-startup-hook + (lambda () + (with-current-buffer "*scratch*" + (lisp-interaction-mode) + (goto-char (point-min)) + (forward-line 2) + (set-buffer-modified-p nil)))) + +;; Local Variables: +;; mode: emacs-lisp +;; End: -- 2.43.0