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bug#14595: Erroneous composition of lambda in emacs-lisp buffers with pr
From: |
Juanma Barranquero |
Subject: |
bug#14595: Erroneous composition of lambda in emacs-lisp buffers with prog-prettify-symbols enabled |
Date: |
Sat, 15 Jun 2013 19:35:38 +0200 |
On Sat, Jun 15, 2013 at 11:12 AM, Eli Zaretskii <eliz@gnu.org> wrote:
> The incorrect display happens when the underlined part below
>
> (compose-region start end (cdr (assoc (match-string 0) alist)))))
> ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
>
> is nil. When that happens, (match-string 0) is "(", the left
> parenthesis, not the expected "lambda".
The call to syntax-ppss inside prog--prettify-font-lock-compose-symbol
is altering the match-string data. I saved (match-string 0) in the
let* as ms0, and then for the erroneous lines I get this log:
start = 2507 / end = 2513 / (match-string 0) = #("(" 0 1 (fontified
t)) / ms0 = #("lambda" 0 6 (fontified t)) / alist = (("lambda" . 955))
so it was correct when the function was called. Then I wrapped the
syntax-ppss call inside save-match-data and the bug disappears.
> I hope fontification gurus will be able to tell us why this could
> happen.
Yep.
- bug#14595: Erroneous composition of lambda in emacs-lisp buffers with prog-prettify-symbols enabled, Juanma Barranquero, 2013/06/11
- bug#14595: Erroneous composition of lambda in emacs-lisp buffers with prog-prettify-symbols enabled, Ted Zlatanov, 2013/06/15
- bug#14595: Erroneous composition of lambda in emacs-lisp buffers with prog-prettify-symbols enabled, Eli Zaretskii, 2013/06/15
- bug#14595: Erroneous composition of lambda in emacs-lisp buffers with prog-prettify-symbols enabled, Eli Zaretskii, 2013/06/15
- bug#14595: Erroneous composition of lambda in emacs-lisp buffers with prog-prettify-symbols enabled,
Juanma Barranquero <=
- bug#14595: Erroneous composition of lambda in emacs-lisp buffers with prog-prettify-symbols enabled, Juanma Barranquero, 2013/06/15
- bug#14595: Erroneous composition of lambda in emacs-lisp buffers with prog-prettify-symbols enabled, Juanma Barranquero, 2013/06/15
- bug#14595: Erroneous composition of lambda in emacs-lisp buffers with prog-prettify-symbols enabled, Ted Zlatanov, 2013/06/15
- bug#14595: Erroneous composition of lambda in emacs-lisp buffers with prog-prettify-symbols enabled, Stefan Monnier, 2013/06/15
- bug#14595: Erroneous composition of lambda in emacs-lisp buffers with prog-prettify-symbols enabled, Juanma Barranquero, 2013/06/15
- bug#14595: Erroneous composition of lambda in emacs-lisp buffers with prog-prettify-symbols enabled, Juanma Barranquero, 2013/06/15
- bug#14595: Erroneous composition of lambda in emacs-lisp buffers with prog-prettify-symbols enabled, Ted Zlatanov, 2013/06/15
- bug#14595: Erroneous composition of lambda in emacs-lisp buffers with prog-prettify-symbols enabled, Eli Zaretskii, 2013/06/15
- bug#14595: Erroneous composition of lambda in emacs-lisp buffers with prog-prettify-symbols enabled, Juanma Barranquero, 2013/06/15
- bug#14595: Erroneous composition of lambda in emacs-lisp buffers with prog-prettify-symbols enabled, Ted Zlatanov, 2013/06/16