GNU bug report logs - #22248
gnus-article-mode omits apostrophe from isearch string

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Message #5 received at submit <at> debbugs.gnu.org (full text, mbox):

From: Juri Linkov <juri <at> linkov.net>
To: bug-gnu-emacs <at> gnu.org
Subject: gnus-article-mode omits apostrophe from isearch string
Date: Sun, 27 Dec 2015 02:28:05 +0200

Trying to put an expression like (setq var 'foo) into the isearch ring
by moving point at its beginning and typing C-s C-w C-w C-w ...
doesn't add apostrophe in Gnus because gnus-article-mode modifies
syntax of ' to whitespace:

  (defvar gnus-article-mode-syntax-table
    (let ((table (copy-syntax-table text-mode-syntax-table)))
      ;; make M-. in article buffers work for `foo' strings
      (modify-syntax-entry ?' " " table)
      (modify-syntax-entry ?` " " table)

and lax-whitespace search together with isearch-yank-word-or-char
squeeze apostrophe in a sequence of space characters.

One solution is to modify syntax of ' and ` in gnus-article-mode-syntax-table
to syntax discussed in bug#22238, i.e. not whitespace and not part
of a symbol, still allowing M-. in article buffers work for `foo' strings,
and allowing isearch to search in other buffers the same string yanked
to the search ring from Gnus.

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