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org-babel-comint-with-output: Fix edge case for partial prompts 

* lisp/ob-comint.el (org-babel-comint-with-output): Do not try to
filter out prompts in `comint-output-filter-functions'.  The prompts
may arrive there arbitrarily - multiple prompts together, partial
prompts, full prompts, etc.  For example "ghci> " prompt may arrive as
"gh" + "ci> " with second part still matching `comint-prompt-regexp'.
As a result, if we keep using `comint-output-filter-functions', the
split prompts may sometimes retain their initial part, littering the
results.  Now, we postpone filtering to after receiving the output,
still making sure that agglomerated prompts gets filtered using a
custom regexp derived from `comint-prompt-regexp'.
This commit is contained in:
Ihor Radchenko 2023-03-24 11:15:58 +01:00
parent a8a516ba33
commit 866ed1a3c5
No known key found for this signature in database
GPG Key ID: 6470762A7DA11D8B
1 changed files with 16 additions and 30 deletions
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38
lisp/ob-comint.el
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@ -81,28 +81,7 @@ or user `keyboard-quit' during execution of body."
(let* ((string-buffer "")
(comint-output-filter-functions
(cons (lambda (text)
(setq string-buffer
(concat
string-buffer
;; Upon concatenation, the prompt may no
;; longer match `comint-prompt-regexp'.
;; In particular, when the regexp has ^
;; and the output does not contain
;; trailing newline. Use more reliable
;; match to split the output later.
(replace-regexp-in-string
;; Sometimes, we get multiple agglomerated
;; prompts together in a single output:
;; "prompt prompt prompt output"
;; Remove them progressively, so that
;; possible "^" in the prompt regexp gets to
;; work as we remove the heading prompt
;; instance.
(if (string-prefix-p "^" comint-prompt-regexp)
(format "^\\(%s\\)+" (substring comint-prompt-regexp 1))
comint-prompt-regexp)
,org-babel-comint-prompt-separator
text))))
(setq string-buffer (concat string-buffer text)))
comint-output-filter-functions))
dangling-text)
;; got located, and save dangling text
@ -126,12 +105,19 @@ or user `keyboard-quit' during execution of body."
(goto-char (process-mark (get-buffer-process (current-buffer))))
(insert dangling-text)
;; Replace partially supplied input lines.
;; This is needed when output filter spits partial lines that
;; do not include a full prompt at a time.
;; Filter out prompts.
(setq string-buffer
(replace-regexp-in-string
comint-prompt-regexp
;; Sometimes, we get multiple agglomerated
;; prompts together in a single output:
;; "prompt prompt prompt output"
;; Remove them progressively, so that
;; possible "^" in the prompt regexp gets to
;; work as we remove the heading prompt
;; instance.
(if (string-prefix-p "^" comint-prompt-regexp)
(format "^\\(%s\\)+" (substring comint-prompt-regexp 1))
comint-prompt-regexp)
,org-babel-comint-prompt-separator
string-buffer))
;; remove echo'd FULL-BODY from input