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    Perl language syntax highlighting troubles (bug or limitation ?)

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    • Gilles MaisonneuveG
      Gilles Maisonneuve @Ekopalypse
      last edited by Gilles Maisonneuve

      @Ekopalypse

      All right, nearly done: with the following regexp in your python code:

      regexes[(1, (255,0,128))] = (r'\bq[rwqx]{0,1}\b([^\h]).*?\1|(\bq[rwqx]{0,1}\b\h+(\w).*?\3)', [0])
      regexes[(2, (255,0,128))] = (r'\bq[rwqx]{0,1}\b\h*(\(.+?\)|\[.+?\]|\{.+?\})', [0])
      regexes[(3, (0,0,0))] = (r'(?s)((<<)"*(\w+?)"*;.*?\3)', [2])
      regexes[(4, (0,0,0))] = (r'(?s)((<<)\h+"(\w+?)";.*?\3)', [2,3])
      

      I get the following colors:

      q* colors OK, here docs no

      Q* colors are good {well I might have an uggly taste in colors but at least they match ;-)) }

      Would you have any clue about why the here docs= are still not handled properly ? They should be black, I think.

      EkopalypseE 1 Reply Last reply Reply Quote 2
      • EkopalypseE
        Ekopalypse @Gilles Maisonneuve
        last edited by

        @Gilles-Maisonneuve

        the regexes assumes double quotes and semicolon directly attached to EOT.
        Like

        print << "EOT";
        
        --------------------- separation line ------------------
        
        EOT
        

        Is there a rule how this is specified?

        1 Reply Last reply Reply Quote 2
        • Gilles MaisonneuveG
          Gilles Maisonneuve
          last edited by Gilles Maisonneuve

          I think I found why.
          Your regexp says :
          r'(?s)((<<)"*(\w+?)"*;.*?\3)'
          would not it be better if :
          r'(?s)(\h*(<<)\h*"*(\w+?)"*\h*;.*?\3)'

          ???

          To answer your question:

          Perl allows

          1. <<TEXT,
          2. << TEXT
          3. <<‘TEXT’ / << ‘TEXT’
          4. <<“TEXT” / << “TEXT”

          meanings differ in each case…

          1 Reply Last reply Reply Quote 2
          • EkopalypseE
            Ekopalypse
            last edited by

            To be honest - I’m not a regex expert at all :-D
            If you, as a perl developer, say so I would absolutely believe it is :-)

            Gilles MaisonneuveG 1 Reply Last reply Reply Quote 1
            • Gilles MaisonneuveG
              Gilles Maisonneuve @Ekopalypse
              last edited by

              @Ekopalypse

              In your Python regexp, what’s the meaning of:

              1. “\3”
              2. “, [2]” and “[2,3]” ?

              If I can understand what I think I could translate a Perl regex code into python (for this case at least).

              1 Reply Last reply Reply Quote 0
              • EkopalypseE
                Ekopalypse
                last edited by

                What about using this
                (?s)((<<)\h+(["|'])(\w+?)\3\h*;.*?\4)

                Gilles MaisonneuveG 1 Reply Last reply Reply Quote 0
                • EkopalypseE
                  Ekopalypse
                  last edited by

                  1. is the boost:regex convention to denote match group 3
                    and
                  2. defines which match group actually should be painted

                  Like if you have:

                  r'(word1)(word2)(word3)', [2,3]
                  

                  would mean that only word2 and word3 would be painted
                  whereas if you would specify

                  r'(word1)(word2)(word3)', [0]
                  

                  everything would be colored.

                  Does this makes sense to you?

                  Gilles MaisonneuveG 1 Reply Last reply Reply Quote 0
                  • Gilles MaisonneuveG
                    Gilles Maisonneuve @Ekopalypse
                    last edited by

                    @Ekopalypse

                    I don’t understand your regexp syntax. Perhaps too ‘pythonized’ for me.

                    (?s) : what does it mean ? is it ‘s///’ ? or really a non capturing group of ‘s’ ???
                    \3 \4 : are they $3 $4, I don’t think as I can’t see a 4th accumulator

                    1 Reply Last reply Reply Quote 0
                    • EkopalypseE
                      Ekopalypse
                      last edited by Ekopalypse

                      (?s) is a modifier telling the engine that the dot matches line endings
                      and yes, the engine uses \1 and $1

                      Here the link to the documentation - maybe easier for you.

                      1 Reply Last reply Reply Quote 0
                      • EkopalypseE
                        Ekopalypse
                        last edited by

                        ooppps

                        (?s)((<<)\h+(["|'])(\w+?)\3\h*;.*?\3)

                        :-D

                        Gilles MaisonneuveG 1 Reply Last reply Reply Quote 0
                        • Gilles MaisonneuveG
                          Gilles Maisonneuve @Ekopalypse
                          last edited by

                          This post is deleted!
                          1 Reply Last reply Reply Quote 0
                          • Gilles MaisonneuveG
                            Gilles Maisonneuve @Ekopalypse
                            last edited by

                            @Ekopalypse

                            Ok
                            another one: in Python you must say ["|'] instead of Perl ["'] (‘either one of the set’) ? Is that what it means ?

                            EkopalypseE 1 Reply Last reply Reply Quote 0
                            • EkopalypseE
                              Ekopalypse
                              last edited by

                              No, afaik non-capturing group is (?:pattern)
                              This, (?s), just tells the engine that the dot . is matching
                              EOLs like \r\n - if I’m right.

                              1 Reply Last reply Reply Quote 1
                              • EkopalypseE
                                Ekopalypse
                                last edited by Ekopalypse

                                Just for clarification, the python script does NOT use the python regex engine instead
                                it uses the one notepad++ offers, the boost::regex.
                                Yes, you can use the enumeration without the pipe but makes it more visible for me with
                                the pipe sign. Or is there a difference if used with pipe sign or without?

                                1 Reply Last reply Reply Quote 1
                                • EkopalypseE
                                  Ekopalypse
                                  last edited by Ekopalypse

                                  or maybe this one might be even better
                                  (?s)(<<)\h+(["'])(\w+?)\2\h*;.*?\3

                                  1 Reply Last reply Reply Quote 1
                                  • Gilles MaisonneuveG
                                    Gilles Maisonneuve
                                    last edited by

                                    Can’t reply what I wanted, a robot says I’m spamming…

                                    Gilles MaisonneuveG 1 Reply Last reply Reply Quote 0
                                    • EkopalypseE
                                      Ekopalypse @Gilles Maisonneuve
                                      last edited by

                                      @Gilles-Maisonneuve

                                      Can’t reply what I wanted, a robot says I’m spamming…

                                      I have no idea why this happens sometimes.

                                      By the way, now that you have installed pythonscript plugin would you mind
                                      clicking Plugins->Python Script->Scripts->Samples->RegexTester ?

                                      I know not everyone is recommending it but, personally, I love it.

                                      1 Reply Last reply Reply Quote 1
                                      • Gilles MaisonneuveG
                                        Gilles Maisonneuve @Gilles Maisonneuve
                                        last edited by

                                        AFAIK, at least in Perl, ["|'] means double-quote OR pipre OR simple-quote, everything between square brakets is literal. Also true in “awk” and C regexp I think.
                                        I don’t know for Python.

                                        Gilles MaisonneuveG 1 Reply Last reply Reply Quote 1
                                        • Gilles MaisonneuveG
                                          Gilles Maisonneuve @Gilles Maisonneuve
                                          last edited by

                                          @Ekopalypse

                                          Now, if I say in Pyhton (attempt to transliterate from Perl) :

                                          (r'(?s)(\h*(<<)\h*["|']?([^"|^']+?)["|']?\h*;.*?\3)', [2])
                                          

                                          does it mean :

                                          1. form REGEXP
                                          2. do not match NL with DOT
                                          3. matches any horizontal blanks (0 or more), don’t make a group
                                          4. matches ‘<<’ make it a group
                                          5. matches any horizontal blanks (0 or more), don’t make a group
                                          6. matches 0 or 1 text quote (either double or single), no group
                                          7. matches a group of any chars not " nor ’ one or more time(s) (in perl it would be [^"'])
                                          8. matches 0 or 1 text quote (either double or single), no group
                                          9. possible blanks until semi-colon, semi-colon, then possible chars until NL

                                          BUT THEN, what does mean ?\3. I’m lost there.

                                          Gilles MaisonneuveG 1 Reply Last reply Reply Quote 0
                                          • Gilles MaisonneuveG
                                            Gilles Maisonneuve @Gilles Maisonneuve
                                            last edited by

                                            a slash m

                                            EkopalypseE 1 Reply Last reply Reply Quote 0
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