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TODO:
* Documentation
- Finish the reference manual of the API.
- Finish the manual describing the syntax and semantics of regexps.
- Write a description of the algorithms used. There's already my
Master's Thesis, but it's not TRE-specific, and it's a
thesis, not an algorithm description.
- Write man page for tre regexp syntax.
* POSIX required features
- Support for collating elements and equivalence classes. This
requires some level of integration with libc.
* New features
- Support for GNU regex extensions.
- word boundary syntax [[:<:]] and [[:>:]]
- beginning and end of buffer assertions ("\`" and "\'")
- is there something else missing?
- Better system ABI support for non-glibc systems?
- Transposition operation for the approximate matcher?
* Extend API
- Real-time interface?
- design API
- return if not finished after a certain amount of work
- easy for regexec(), more work for regcomp().
* Optimizations
- Make specialized versions of matcher loops for REG_NOSUB.
- Find out the longest string that must occur in any match, and
search for it first (with a fast Boyer-Moore search, or maybe
just strstr). Then match both ways to see if it was part of
match.
- Some kind of a pessimistic histogram filter might speed up
searching for approximate matching.
- Optimize tre_tnfa_run_parallel to be faster (swap instead of
copying everything? Assembler optimizations?)
- Write a benchmark suite to see whan effects different
optimizations have in different situations.
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