Hi
The regexp .\{1,9000} is very slow with the new regexp engine
compared to the old engine. Compare the timing of those 2
commands where the only difference is set re=1 vs set re=2:
$ time vim -X -u NONE \
-c 'set re=1' \
-c 'call feedkeys("ihello\<esc>/.\\{1,9000}\<cr>:q!\<cr>")'
real 0m0.004s
user 0m0.000s
sys 0m0.004s
$ time vim -X -u NONE \
-c 'set re=2' \
-c 'call feedkeys("ihello\<esc>/.\\{1,9000}\<cr>:q!\<cr>")'
real 0m6.499s
user 0m6.432s
sys 0m0.020s
=> new regexp engine is 1624x times times slower here.
Is this a known limitation of the new NFA regexp engine?
Regards
Dominique
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