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| Manifest0 | Hi! I'm trying to create a regular expression that will match the string "attrib='hello \"world\"!'" | 15:34 | |
| I came up with /\w+ '=' (<["'" '"']>) (.*?) $0/ but i get several warnings such as: Quotes are not metacharacters in character classes, Repeated character (") unexpectedly found in character class, and Repeated character (') unexpectedly found in character class | 15:35 | ||
| How do i fix my regex to not have such warnings? | |||
| librasteve | Manifest0 - let me take a look | 15:59 | |
| iirc there is a special raku re syntax for matching balanced chars | 16:01 | ||
| Manifest0 | i didn't find anything in the documentation | 16:09 | |
| librasteve | hmm - maybe that's only for Grammar tokens ... sorry | ||
| m: say q|attrib='hello "world"!'| ~~ / (\w+) '=' '(.*)' / | 16:10 | ||
| Raku eval | ｢attrib='hello "world"!'｣ 0 => ｢attrib｣ 1 => ｢hello "world"!｣ | ||
| librasteve | ^ is this what you have in mind? | ||
| I am guessing that you want the result captured as name, value and that the double quotes are part of the value Str | 16:11 | ||
| Manifest0 | kind of. The part after the =, can start with a ' or " | 16:12 | |
| librasteve | PS I am using the q-lang syntax q|xxx| at least to strip the outer quotes to try and reduce "quote noise" | ||
| Manifest0 | like a xml attribute | ||
| lucs | m: print (q[attrib='hello "world"!'] ~~ / <-[=]>+ '=' (<["']>) (.*?) $0/)[1] | 16:13 | |
| camelia | hello "world"! | ||
| Manifest0 | lucs, that seems to work :-) | 16:14 | |
| lucs | m: print (q[attrib='hello "world"!'] ~~ / <?after '='> (<["']>) (.*?) $0/)[1] | 16:15 | |
| camelia | hello "world"! | ||
| Manifest0 | what does the '?after' do ? | 16:17 | |
| librasteve | m: say ( q|attrib='hello "world"!'| ~~ / $<name>=[<-[=]>] '=' '$<value>=[.]' / )<value> | 16:18 | |
| Raku eval | ｢hello "world"!｣ | ||
| librasteve | m: say ~( q|attrib='hello "world"!'| ~~ / $<name>=[<-[=]>] '=' '$<value>=[.]' / )<value> | 16:19 | |
| Raku eval | Use of Nil in string context in block <unit> at main.raku line 1 | ||
| librasteve | m: say ( q|attrib='hello "world"!'| ~~ / $<name>=[<-[=]>] '=' '$<value>=[.]' / )<value>.Str | ||
| Raku eval | Use of Nil in string context in block <unit> at main.raku line 1 | ||
| Manifest0 | This "say ( q|attrib='hello "world"!'| ~~ / $<name>=[<-[=]>] '=' '$<value>=[.]' / )<value>" doesn't work in my raku | ||
| lucs | Manifest0: I'ts a zero-width assertion that matches after what is indicated. | ||
| librasteve | oh Disrod bridge lost my * | ||
| scullucs | Yeah, Discord vs IRC: don't always agree 🙂 | 16:20 | |
| librasteve | ~( q|attrib='hello "world"!'| ~~ / $<name>=[<-[=]>*] '=' \'$<value>=[.*]\' /)<value> | ||
| m: my $s = q|attrib='hello "world"!'|; my regex name { <-[=]>* }; my regex value { .* }; say ~($s ~~ /<name> '=' <value>/)<value>; | 16:24 | ||
| Raku eval | 'hello "world"!' | ||
| librasteve | m: my $s = q|attrib='hello "world"!'|; my regex name { <-[=]>* }; my regex value { .* }; say ~($s ~~ /<name> '=' '<value>'/)<value>; | 16:29 | |
| Raku eval | hello "world"! | ||
| librasteve | oops I forgot to strip the value ' | 16:30 | |
| m: my $s = q|attrib='hello "world"!'|; my regex name { <-[=]>* }; my regex value { .* }; say ~($s ~~ /<name> '=' \'<value>\' /)<value>; | |||
| sorry for the overkill - I just wanted to see how this would look with nested named regexs | 16:31 | ||
| Manifest0 | no worries. | 16:36 | |
| I'm playing now with the lucs solution - with the zero width assertions, since i don't know how them | |||
| scullucs | my $s = q|attrib="hello 'world'!"|; say ~($s ~~ / [$<name> = <-[=]>] '=' (<['"]>) [$<value> = (.*?)] $0/)<value>; | 16:41 | |
| librasteve | btw I was curious (friday afternoon!) and found this docs.raku.org/language/regexes#Til...structures | 16:42 | |
| scullucs | Hmm... Does it account for balancing? | ||
| librasteve | docs.raku.org/language/regexes#Rec...ve_Regexes | 16:45 | |
| yes | |||
| scullucs | I should have kept reading apparently 🙂 | ||
| librasteve | m: my $paren = rx/ '(' <-[()]>* ')' || '('[ <-[()]>* <~~> <-[()]>* ]* ')' /; say '((5 + 2) × 6) = 42 (the answer)' ~~ $paren; | ||
| Raku eval | ｢((5 + 2) × 6)｣ | ||
| librasteve | well I probably have more to learn ;-) | 16:48 | |
| scullucs | I'm always amazed by how much stuff I can do with Raku compared to how much more of it I need to learn. | 16:49 | |
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| renormalist | raku: say "HELLO"; | 22:41 | |
| m: say "HELLO"; | 22:42 | ||
| camelia | HELLO | ||
| renormalist | Is there bash completion support somewhere for raku tools like mi6, zef, fez, etc.? | 22:47 | |
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