Bug 17212 – std.regex doesn't ignore whitespace after character classes, even when compiling with "x"

Even when compiled with the "x" flag, a regex does not ignore whitespace in a pattern immediately after a character class: msl@james:~/d$ cat test3.d #!/usr/bin/rdmd import std.regex, std.stdio; void main(in string[] args) { auto rx = regex(args[2], "x"); writeln(!!args[1].matchFirst(rx)); } msl@james:~/d$ ./test3.d 'a', ' a ' true msl@james:~/d$ ./test3.d 'a', ' [a] ' false msl@james:~/d$ ./test3.d 'a ', ' [a] ' true msl@james:~/d$ The bug is present in 2.073.1 but was not present in 2.071. I'll download some intermediate releases and try to narrow it down more precisely.

The bug seems to have been introduced in 2.072.0.

Commits pushed to stable at https://github.com/dlang/phobos https://github.com/dlang/phobos/commit/62cf615dda64274c4f07b2c92a008baa132073ac Fix issue 17212 std.regex doesn't ignore whitespace after character classes https://github.com/dlang/phobos/commit/694dd1743f4fb627f04d52723228d1ef99c5fcac Merge pull request #5167 from DmitryOlshansky/fix-freeform-regex Fix issue 17212 std.regex doesn't ignore whitespace after character c…

Commits pushed to master at https://github.com/dlang/phobos https://github.com/dlang/phobos/commit/62cf615dda64274c4f07b2c92a008baa132073ac Fix issue 17212 std.regex doesn't ignore whitespace after character classes https://github.com/dlang/phobos/commit/694dd1743f4fb627f04d52723228d1ef99c5fcac Merge pull request #5167 from DmitryOlshansky/fix-freeform-regex