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* etc/NEWS: Extend paragraph about &define form and backtracking

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Philipp Stephani 2021-04-10 21:54:12 +02:00
parent 81ffc43383
commit 1d474ad69d
1 changed files with 5 additions and 2 deletions
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@ -2535,8 +2535,11 @@ back in Emacs 23.1. The affected functions are: 'make-obsolete',
** The 'values' variable is now obsolete.
** The '&define' keyword in an Edebug specification now disables
backtracking.
+++
** The '&define' keyword in an Edebug specification now disables backtracking.
The implementation was buggy, and multiple &define forms in an &or
form should be exceedingly rare. See the Info node 'Backtracking' in
the Emacs Lisp reference manual for background.
* Lisp Changes in Emacs 28.1