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Re: [O] [PATCH 1/2] clean up two macros in ob-comint
From: |
Eric Schulte |
Subject: |
Re: [O] [PATCH 1/2] clean up two macros in ob-comint |
Date: |
Tue, 29 Oct 2013 19:53:29 -0600 |
User-agent: |
Gnus/5.13 (Gnus v5.13) Emacs/24.3 (gnu/linux) |
Applied, thanks!
Aaron Ecay <address@hidden> writes:
> * lisp/ob-comint.el (org-babel-comint-with-output,
> org-babel-comint-in-buffer): clean up code.
>
> This patch replaces some deeply nested ca/dr calls with ‘nth’, and
> replaces a setq/unwind-protect/setq incantation with a simple let
> binding. Finally, it also restructures ’org-babel-comint-in-buffer’
> to not needlessly save/restore match and excursion data if the buffer
> process is not live, and to use with-current-buffer instead of
> save-excursion+set-buffer
> (info "(elisp) Excursions")
> ---
> lisp/ob-comint.el | 84
> ++++++++++++++++++++++++++-----------------------------
> 1 file changed, 40 insertions(+), 44 deletions(-)
>
> diff --git a/lisp/ob-comint.el b/lisp/ob-comint.el
> index 8b03e2d..4e2b352 100644
> --- a/lisp/ob-comint.el
> +++ b/lisp/ob-comint.el
> @@ -48,12 +48,12 @@ BUFFER is checked with `org-babel-comint-buffer-livep'.
> BODY is
> executed inside the protection of `save-excursion' and
> `save-match-data'."
> (declare (indent 1))
> - `(save-excursion
> + `(progn
> + (unless (org-babel-comint-buffer-livep ,buffer)
> + (error "Buffer %s does not exist or has no process" ,buffer))
> (save-match-data
> - (unless (org-babel-comint-buffer-livep ,buffer)
> - (error "Buffer %s does not exist or has no process" ,buffer))
> - (set-buffer ,buffer)
> - ,@body)))
> + (with-current-buffer ,buffer
> + ,@body))))
> (def-edebug-spec org-babel-comint-in-buffer (form body))
>
> (defmacro org-babel-comint-with-output (meta &rest body)
> @@ -69,46 +69,42 @@ elements are optional.
> This macro ensures that the filter is removed in case of an error
> or user `keyboard-quit' during execution of body."
> (declare (indent 1))
> - (let ((buffer (car meta))
> - (eoe-indicator (cadr meta))
> - (remove-echo (cadr (cdr meta)))
> - (full-body (cadr (cdr (cdr meta)))))
> + (let ((buffer (nth 0 meta))
> + (eoe-indicator (nth 1 meta))
> + (remove-echo (nth 2 meta))
> + (full-body (nth 3 meta)))
> `(org-babel-comint-in-buffer ,buffer
> - (let ((string-buffer "") dangling-text raw)
> - ;; setup filter
> - (setq comint-output-filter-functions
> - (cons (lambda (text) (setq string-buffer (concat string-buffer
> text)))
> - comint-output-filter-functions))
> - (unwind-protect
> - (progn
> - ;; got located, and save dangling text
> - (goto-char (process-mark (get-buffer-process (current-buffer))))
> - (let ((start (point))
> - (end (point-max)))
> - (setq dangling-text (buffer-substring start end))
> - (delete-region start end))
> - ;; pass FULL-BODY to process
> - ,@body
> - ;; wait for end-of-evaluation indicator
> - (while (progn
> - (goto-char comint-last-input-end)
> - (not (save-excursion
> - (and (re-search-forward
> - (regexp-quote ,eoe-indicator) nil t)
> - (re-search-forward
> - comint-prompt-regexp nil t)))))
> - (accept-process-output (get-buffer-process (current-buffer)))
> - ;; thought the following this would allow async
> - ;; background running, but I was wrong...
> - ;; (run-with-timer .5 .5 'accept-process-output
> - ;; (get-buffer-process (current-buffer)))
> - )
> - ;; replace cut dangling text
> - (goto-char (process-mark (get-buffer-process (current-buffer))))
> - (insert dangling-text))
> - ;; remove filter
> - (setq comint-output-filter-functions
> - (cdr comint-output-filter-functions)))
> + (let ((string-buffer "")
> + (comint-output-filter-functions
> + (cons (lambda (text) (setq string-buffer (concat string-buffer
> text)))
> + comint-output-filter-functions))
> + dangling-text raw)
> + ;; got located, and save dangling text
> + (goto-char (process-mark (get-buffer-process (current-buffer))))
> + (let ((start (point))
> + (end (point-max)))
> + (setq dangling-text (buffer-substring start end))
> + (delete-region start end))
> + ;; pass FULL-BODY to process
> + ,@body
> + ;; wait for end-of-evaluation indicator
> + (while (progn
> + (goto-char comint-last-input-end)
> + (not (save-excursion
> + (and (re-search-forward
> + (regexp-quote ,eoe-indicator) nil t)
> + (re-search-forward
> + comint-prompt-regexp nil t)))))
> + (accept-process-output (get-buffer-process (current-buffer)))
> + ;; thought the following this would allow async
> + ;; background running, but I was wrong...
> + ;; (run-with-timer .5 .5 'accept-process-output
> + ;; (get-buffer-process (current-buffer)))
> + )
> + ;; replace cut dangling text
> + (goto-char (process-mark (get-buffer-process (current-buffer))))
> + (insert dangling-text)
> +
> ;; remove echo'd FULL-BODY from input
> (if (and ,remove-echo ,full-body
> (string-match
--
Eric Schulte
https://cs.unm.edu/~eschulte
PGP: 0x614CA05D