Hi guys, I am making progress with regex, but I still need help. I am trying to make a special regex for my file parsor. Basically, I would like to check if a line contain a dependency in this form, this is an example: @ProgrammingTools-Main:Gcc>=14.2.0(Pass1,Lto) Where the line can start with s…

Basically line 1 and 2 should match

str = <<-HEREDOC @ProgrammingTools-Main:Gcc>=14.2.0 @ProgrammingTools-Main:Gcc>=14.2.0(Pass1,Pass2,Pass3,Lto) @ProgrammingTools-Main:Gcc>=14.2.0(Pass1,Pass2,Pass3) HEREDOC pattern = /^[\s]+(@[\w\-]+):([\w\-]+)(>=|<=|=|>|<)([\w.\-]+)(?:\(([\w,\-]*)\))?/im str.scan(pattern) do …

Thanks a lot for your help! Just 2 questions. First: is it normal when I copy this regex to the regex website , it don’t work ? Second: When I try the code, I am getting this: Regex::MatchData(" @ProgrammingTools-Main:Gcc>=14.2.0(Pass1,Pass2,Pass3,Lto)" 1:"@ProgrammingTools-Main" 2:"Gcc" 3:">…

[image] Sija: @ProgrammingTools-Main:Gcc>=14.2.0 I would it match this as well, because it can be to without anything after

[image] Sija: (@[\w\-]+):([\w\-]+)(>=|<=|=|>|<)([\w.\-]+)(?:\(([\w,\-]*)\))? So I tried again with this tests: str = <<-HEREDOC @ProgrammingTools-Main:Gcc>=14.2.0 @ProgrammingTools-Main:Gcc>=14.2.0(Pass1,Pass2,Pass3,Lto) @ProgrammingTools-Main:Gcc>=14.2.0 @Program…

Here you go: (@[\w\-]+):([\w\-]+)(>=|<=|=|>|<)([\d.\-]+)(?:\(?([\w,\-]*)\)?)?

[image] Sija: (@[\w\-]+):([\w\-]+)(>=|<=|=|>|<)([\d.\-]+)(?:\(?([\w,\-]*)\)?)? It is still matching even if you don’t open parenthesis :x str = <<-HEREDOC @ProgrammingTools-Main:Gcc>=14.2.0Pass1,Pass2,Pass3,Lto) HEREDOC pattern = /(@[\w\-]+):([\w\-]+)(>=|<=|=|>|<)([\d.\-]+)(?:\(?([\w,\-]*)\…

Yeah, I thought that’s what you wanted :man_shrugging: I guess two things would come handy here: more clear communication regarding the desired outcome and some energy put by you into learning yourself regular expressions xD They ain’t that hard :slight_smile:

These regexes all think that 14.2.0Pass1 is itself a valid version, it is up to you to constrain the version format further if you don’t want this to happen

Help with a complex regex

Help & Support

Sija October 6, 2025, 12:06pm 6

If you want to match all 3, just change it to:

/(@[\w\-]+):([\w\-]+)(>=|<=|=|>|<)([\w.\-]+)(?:\(([\w,\-]*)\))?/im

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Help with a complex regex

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