nix-super/src
Matthew Bauer fa8515d7ec Set regex_constants::match_continuous for quicker search
match_continuous limits the search to the current start position,
instead of searching the entire file.

On libc++, this improves performance dramatically:

$ time /nix/store/70ai68dfm6xbzwn26j5n4li9di52ylia-nix-3.0pre20200728_c159f48/bin/nix print-dev-env >/dev/null
/nix/store/70ai68dfm6xbzwn26j5n4li9di52ylia-nix-3.0pre20200728_c159f48/bin/ni  2.39s user 0.19s system 64% cpu 4.032 total
$ time /nix/store/cwjfxxlp83zln4mfyy1d2dbsx7f6s962-nix-3.0pre20200728_dirty/bin/nix print-dev-env >/dev/null
/nix/store/cwjfxxlp83zln4mfyy1d2dbsx7f6s962-nix-3.0pre20200728_dirty/bin/nix   0.09s user 0.05s system 65% cpu 0.204 total

Fixes #3874
2020-07-29 00:57:20 -05:00
..
build-remote Revert the enum struct change 2020-06-18 22:11:26 +00:00
cpptoml Revert the enum struct change 2020-06-18 22:11:26 +00:00
libexpr Merge remote-tracking branch 'upstream/master' into hash-always-has-type 2020-07-27 16:13:57 +00:00
libfetchers Merge remote-tracking branch 'upstream/master' into hash-always-has-type 2020-07-16 14:58:53 +00:00
libmain Merge remote-tracking branch 'origin/master' into flakes 2020-07-06 16:40:10 +02:00
libstore Cleanup 2020-07-29 00:24:55 +02:00
libutil Merge remote-tracking branch 'upstream/master' into hash-always-has-type 2020-07-27 14:22:45 +00:00
nix Set regex_constants::match_continuous for quicker search 2020-07-29 00:57:20 -05:00
nix-build appended ' __attribute__((weak)); ' to 'extern char * * environ ' 2020-06-17 03:25:34 +01:00
nix-channel Merge branch 'master' into errors-phase-2 2020-05-11 14:35:30 -06:00
nix-collect-garbage Remove global -I flags 2020-03-30 15:30:19 +02:00
nix-copy-closure Revert the enum struct change 2020-06-18 22:11:26 +00:00
nix-daemon Remove trailing whitespace 2020-06-15 14:12:39 +02:00
nix-env Get rid of basicDerivation::findOutput 2020-07-23 14:39:02 +00:00
nix-instantiate remove 'format' from Error constructor calls 2020-04-21 17:07:07 -06:00
nix-prefetch-url Merge remote-tracking branch 'upstream/master' into hash-always-has-type 2020-07-13 03:01:44 +00:00
nix-store Merge remote-tracking branch 'upstream/master' into hash-always-has-type 2020-07-27 16:13:57 +00:00
resolve-system-dependencies StorePath: Rewrite in C++ 2020-06-16 14:28:41 +02:00