* bug#17761: 24.3.91; smie-for-sexp and parentheses of-by-one bug?
@ 2014-06-12 11:58 Leo Liu
2014-06-13 15:33 ` Stefan Monnier
0 siblings, 1 reply; 3+ messages in thread
From: Leo Liu @ 2014-06-12 11:58 UTC (permalink / raw)
To: 17761
1. Open a buffer in octave mode and insert ( ) with point between the
parentheses
2. Eval (smie-forward-sexp) which should give back something like
(t 2 ")")
POS is before the token ")" instead of the end position of the token. Is
this a bug? This can often cause infinite loop if one is not careful.
BTW, although smie-config-guess's return value is not documented, it
seems no harm to do something like the following:
=== modified file 'lisp/emacs-lisp/smie.el'
--- lisp/emacs-lisp/smie.el 2014-03-04 08:35:11 +0000
+++ lisp/emacs-lisp/smie.el 2014-06-12 11:20:38 +0000
@@ -2156,7 +2156,7 @@
(user-error "This buffer does not seem to be using SMIE"))
(let ((config (smie-config--guess (point-min) (point-max))))
(cond
- ((null config) (message "Nothing to change"))
+ ((null config) (message "Nothing to change") nil)
((null smie-config--buffer-local)
(message "Local rules set")
(setq smie-config--buffer-local config))
Thanks,
Leo
^ permalink raw reply [flat|nested] 3+ messages in thread
* bug#17761: 24.3.91; smie-for-sexp and parentheses of-by-one bug?
2014-06-12 11:58 bug#17761: 24.3.91; smie-for-sexp and parentheses of-by-one bug? Leo Liu
@ 2014-06-13 15:33 ` Stefan Monnier
2014-06-13 16:14 ` Leo Liu
0 siblings, 1 reply; 3+ messages in thread
From: Stefan Monnier @ 2014-06-13 15:33 UTC (permalink / raw)
To: Leo Liu; +Cc: 17761
> 1. Open a buffer in octave mode and insert ( ) with point between the
> parentheses
> 2. Eval (smie-forward-sexp) which should give back something like
> (t 2 ")")
> POS is before the token ")" instead of the end position of the token. Is
> this a bug?
Indeed, thanks. I installed a patch into `emacs-24' which should
fix this. As you can see, SMIE is mostly used to parse backward!
> BTW, although smie-config-guess's return value is not documented, it
> seems no harm to do something like the following:
Using its return value is an error, so I'd rather not encourage this error.
Stefan
^ permalink raw reply [flat|nested] 3+ messages in thread
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2014-06-12 11:58 bug#17761: 24.3.91; smie-for-sexp and parentheses of-by-one bug? Leo Liu
2014-06-13 15:33 ` Stefan Monnier
2014-06-13 16:14 ` Leo Liu
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