Commits on Sep 19, 2024

1. Add new API function pcre2_set_optimization() for controlling enabled… …

   … optimizations
   
   It is anticipated that over time, more and more optimizations will be
   added to PCRE2, and we want to be able to switch optimizations off/on,
   both for testing purposes and to be able to work around bugs in a
   released library version.
   
   The number of free bits left in the compile options word is very small.
   Hence, we will start putting all optimization enable/disable flags in
   a separate word. To switch these off/on, the new API function
   pcre2_set_optimization() will be used.
   
   The values which can be passed to pcre2_set_optimization() are
   different from the internal flag bit values. The values accepted by
   pcre2_set_optimization() are contiguous integers, so there is no
   danger of ever running out of them. This means in the future, the
   internal representation can be changed at any time without breaking
   backwards compatibility. Further, the 'directives' passed to
   pcre2_set_optimization() are not restricted to control a single,
   specific optimization. As an example, passing PCRE2_OPTIMIZATION_FULL
   will turn on all optimizations supported by whatever version of
   PCRE2 the client program happens to be linked with.
   
   Co-Authored-By: Carlo Marcelo Arenas Belón <carenas@gmail.com>
   Co-Authored-by: Zoltan Herczeg <hzmester@freemail.hu>

   

   3 people committed Sep 19, 2024
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