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bug#19342: auto-fill scan-error in sh-mode
From: |
Lars Ingebrigtsen |
Subject: |
bug#19342: auto-fill scan-error in sh-mode |
Date: |
Thu, 19 Aug 2021 15:29:10 +0200 |
User-agent: |
Gnus/5.13 (Gnus v5.13) Emacs/28.0.50 (gnu/linux) |
Glenn Morris <rgm@gnu.org> writes:
> Type a long string with spaces, past fill-column; eg:
>
> foo="aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa aaaaaaaaaaaaaaaaaaaa aaaaaaaaaa
>
> Auto-fill results in:
>
> Error: (scan-error "Containing expression ends prematurely" 75 75)
This problem is still present in Emacs 28. This is the backtrace:
Debugger entered--Lisp error: (scan-error "Containing expression ends
prematurely" 95 95)
signal(scan-error ("Containing expression ends prematurely" 95 95))
(if (and (car res) (= pos (point)) (not (if forw (eobp) (bobp)))) (
(let ((pos (point)) (res (if forw (smie-forward-sexp 'halfsexp) (sm
(while (/= n 0) (setq n (- n (if forw 1 -1))) (let ((pos (point)) (
(let ((forw (> n 0)) (forward-sexp-function nil)) (while (/= n 0) (
smie-forward-sexp-command(1)
forward-sexp(1)
(cond ((< 0 (length tok)) (assoc tok smie-grammar)) ((looking-at "\
(let ((tok (funcall smie-forward-token-function))) (cond ((< 0 (len
smie-indent-forward-token()
smie-indent-keyword()
smie--funcall(smie-indent-keyword)
run-hook-wrapped(smie--funcall smie-indent-keyword)
smie-indent-calculate()
smie-auto-fill(#f(compiled-function (&rest args) #<bytecode
-0x1d0b7391ba5340b6>))
The code that errors out is:
(defun smie-indent-forward-token ()
[...]
((looking-at "\\s\"\\|\\s|")
(forward-sexp 1)
That is, if we're auto-filling an unterminated string, it'll always bug
out, apparently?
I've added Stefan to the CCs.
--
(domestic pets only, the antidote for overdose, milk.)
bloggy blog: http://lars.ingebrigtsen.no
- bug#19342: auto-fill scan-error in sh-mode,
Lars Ingebrigtsen <=
- bug#19342: auto-fill scan-error in sh-mode, Stefan Monnier, 2021/08/29
- bug#19342: auto-fill scan-error in sh-mode, Lars Ingebrigtsen, 2021/08/29
- bug#19342: auto-fill scan-error in sh-mode, Stefan Monnier, 2021/08/29
- bug#19342: auto-fill scan-error in sh-mode, Lars Ingebrigtsen, 2021/08/29
- bug#19342: auto-fill scan-error in sh-mode, Stefan Monnier, 2021/08/30
- bug#19342: auto-fill scan-error in sh-mode, Glenn Morris, 2021/08/30
- bug#19342: auto-fill scan-error in sh-mode, Stefan Monnier, 2021/08/30
- bug#19342: auto-fill scan-error in sh-mode, Lars Ingebrigtsen, 2021/08/30
- bug#19342: auto-fill scan-error in sh-mode, Stefan Monnier, 2021/08/30
- bug#19342: auto-fill scan-error in sh-mode, Lars Ingebrigtsen, 2021/08/31