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Allows you to set up a callback that's invoked repeatedly during
matching. If it returns non-0 matching will abort and REG_EINTR is
returned.
Allows you to interrupt long-running regexp executions that would
otherwise block the UI or hang the entire application.
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* Perhaps I am also obliged to document what I changed in the copyright header?
Not sure.
* The license header doesn't necessarily have to be reproduced in binary
distributions.
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I put them into longest() as well, but it appears that both find() and cfind()
will always try shortest() first and should abort if that returns NULL.
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compile-time flag
You no longer need to build two libraries just for supporting raw/ASCII and UTF-8
patterns.
This makes using the library a lot easier and reduces the total binary size.
Since strings are always `unsigned char *` now internally and the raw vs. UTF-8
decision is important only in a few select places, it would make no sense to
use meta-programming techniques.
The test suite has been extended and is now fixed for cases with embedded
non-printable characters.
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* They are built with `-DREGEX_UTF8` instead of `-DREGEX_WCHAR`.
Functions are called reg_ucomp() and reg_uexec() instead for consistency.
The library is now called libhsurex.so instead of libhswrex.so.
* The `chr` type is now always `unsigned char`.
As a result many other uses of the `chr` type had to be changed to pchr
(which is always large enough to hold a byte or wide character).
Generally we try to keep code changes as small as possible since
we may have to backport changes from the Tcl codebase or contribute
patches to the Tcl project.
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