sed with PCRE (like grep -P)











up vote
2
down vote

favorite












I am happy that grep does support Python Compatiable Regular Expressions with the -P option.



Is there a reason why the tool sed does not have this feature?










share|improve this question




















  • 6




    It's Perl Compatible Regular Expressions though... ;-)
    – Byte Commander
    Jun 29 at 11:39










  • Same question from 2012 on the Mailing List
    – RoVo
    Jun 29 at 11:41















up vote
2
down vote

favorite












I am happy that grep does support Python Compatiable Regular Expressions with the -P option.



Is there a reason why the tool sed does not have this feature?










share|improve this question




















  • 6




    It's Perl Compatible Regular Expressions though... ;-)
    – Byte Commander
    Jun 29 at 11:39










  • Same question from 2012 on the Mailing List
    – RoVo
    Jun 29 at 11:41













up vote
2
down vote

favorite









up vote
2
down vote

favorite











I am happy that grep does support Python Compatiable Regular Expressions with the -P option.



Is there a reason why the tool sed does not have this feature?










share|improve this question















I am happy that grep does support Python Compatiable Regular Expressions with the -P option.



Is there a reason why the tool sed does not have this feature?







sed regex






share|improve this question















share|improve this question













share|improve this question




share|improve this question








edited Jun 29 at 16:14









muru

134k19285484




134k19285484










asked Jun 29 at 11:32









guettli

66142063




66142063








  • 6




    It's Perl Compatible Regular Expressions though... ;-)
    – Byte Commander
    Jun 29 at 11:39










  • Same question from 2012 on the Mailing List
    – RoVo
    Jun 29 at 11:41














  • 6




    It's Perl Compatible Regular Expressions though... ;-)
    – Byte Commander
    Jun 29 at 11:39










  • Same question from 2012 on the Mailing List
    – RoVo
    Jun 29 at 11:41








6




6




It's Perl Compatible Regular Expressions though... ;-)
– Byte Commander
Jun 29 at 11:39




It's Perl Compatible Regular Expressions though... ;-)
– Byte Commander
Jun 29 at 11:39












Same question from 2012 on the Mailing List
– RoVo
Jun 29 at 11:41




Same question from 2012 on the Mailing List
– RoVo
Jun 29 at 11:41










2 Answers
2






active

oldest

votes

















up vote
4
down vote













In the case of GNU Sed, the stated reason appears to be




I was afraid it fell into one of those 'cracks'...though from
what was said at the time, some part of the work was already
done and it looked like a matter of docs and packaging...
(though, I admit, in Computer Sci, the last 10% of the work
often takes 90% of the time...




See GNU bug report logs - #22801
status on committed change: upgrading 'sed' RE's to include perlRE syntax - or search the sed-devel Archives for "PCRE" if you want more details.



Don't forget you can use perl itself for many of the simple one-liners for which you might want to use PCRE in sed.






share|improve this answer




























    up vote
    0
    down vote













    Work-around:



    You can use the Pathological Eclectic Rubbish Lister:



    perl -pe 's/../../g' file


    or inline replace:



    perl -pie 's/../../g' file


    This works for the cases where I use sed. If things get more complicated I write a small python script.






    share|improve this answer























    • Well that's great for substitution, but how would you do other sed stuff in Perl? like for example /delete this line/ d
      – wjandrea
      Nov 26 at 15:34








    • 1




      The most promising thing I found after a quick search is s2p (sed to Perl), though I just tried it and the output was VERY verbose.
      – wjandrea
      Nov 26 at 16:00








    • 1




      @wjandrea I updated the answer: "This works for the cases where I use sed. If things get more complicated I write a small python script."
      – guettli
      Nov 27 at 8:06













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    2 Answers
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    active

    oldest

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    2 Answers
    2






    active

    oldest

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    active

    oldest

    votes






    active

    oldest

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    up vote
    4
    down vote













    In the case of GNU Sed, the stated reason appears to be




    I was afraid it fell into one of those 'cracks'...though from
    what was said at the time, some part of the work was already
    done and it looked like a matter of docs and packaging...
    (though, I admit, in Computer Sci, the last 10% of the work
    often takes 90% of the time...




    See GNU bug report logs - #22801
    status on committed change: upgrading 'sed' RE's to include perlRE syntax - or search the sed-devel Archives for "PCRE" if you want more details.



    Don't forget you can use perl itself for many of the simple one-liners for which you might want to use PCRE in sed.






    share|improve this answer

























      up vote
      4
      down vote













      In the case of GNU Sed, the stated reason appears to be




      I was afraid it fell into one of those 'cracks'...though from
      what was said at the time, some part of the work was already
      done and it looked like a matter of docs and packaging...
      (though, I admit, in Computer Sci, the last 10% of the work
      often takes 90% of the time...




      See GNU bug report logs - #22801
      status on committed change: upgrading 'sed' RE's to include perlRE syntax - or search the sed-devel Archives for "PCRE" if you want more details.



      Don't forget you can use perl itself for many of the simple one-liners for which you might want to use PCRE in sed.






      share|improve this answer























        up vote
        4
        down vote










        up vote
        4
        down vote









        In the case of GNU Sed, the stated reason appears to be




        I was afraid it fell into one of those 'cracks'...though from
        what was said at the time, some part of the work was already
        done and it looked like a matter of docs and packaging...
        (though, I admit, in Computer Sci, the last 10% of the work
        often takes 90% of the time...




        See GNU bug report logs - #22801
        status on committed change: upgrading 'sed' RE's to include perlRE syntax - or search the sed-devel Archives for "PCRE" if you want more details.



        Don't forget you can use perl itself for many of the simple one-liners for which you might want to use PCRE in sed.






        share|improve this answer












        In the case of GNU Sed, the stated reason appears to be




        I was afraid it fell into one of those 'cracks'...though from
        what was said at the time, some part of the work was already
        done and it looked like a matter of docs and packaging...
        (though, I admit, in Computer Sci, the last 10% of the work
        often takes 90% of the time...




        See GNU bug report logs - #22801
        status on committed change: upgrading 'sed' RE's to include perlRE syntax - or search the sed-devel Archives for "PCRE" if you want more details.



        Don't forget you can use perl itself for many of the simple one-liners for which you might want to use PCRE in sed.







        share|improve this answer












        share|improve this answer



        share|improve this answer










        answered Jun 29 at 11:43









        steeldriver

        64.9k11103173




        64.9k11103173
























            up vote
            0
            down vote













            Work-around:



            You can use the Pathological Eclectic Rubbish Lister:



            perl -pe 's/../../g' file


            or inline replace:



            perl -pie 's/../../g' file


            This works for the cases where I use sed. If things get more complicated I write a small python script.






            share|improve this answer























            • Well that's great for substitution, but how would you do other sed stuff in Perl? like for example /delete this line/ d
              – wjandrea
              Nov 26 at 15:34








            • 1




              The most promising thing I found after a quick search is s2p (sed to Perl), though I just tried it and the output was VERY verbose.
              – wjandrea
              Nov 26 at 16:00








            • 1




              @wjandrea I updated the answer: "This works for the cases where I use sed. If things get more complicated I write a small python script."
              – guettli
              Nov 27 at 8:06

















            up vote
            0
            down vote













            Work-around:



            You can use the Pathological Eclectic Rubbish Lister:



            perl -pe 's/../../g' file


            or inline replace:



            perl -pie 's/../../g' file


            This works for the cases where I use sed. If things get more complicated I write a small python script.






            share|improve this answer























            • Well that's great for substitution, but how would you do other sed stuff in Perl? like for example /delete this line/ d
              – wjandrea
              Nov 26 at 15:34








            • 1




              The most promising thing I found after a quick search is s2p (sed to Perl), though I just tried it and the output was VERY verbose.
              – wjandrea
              Nov 26 at 16:00








            • 1




              @wjandrea I updated the answer: "This works for the cases where I use sed. If things get more complicated I write a small python script."
              – guettli
              Nov 27 at 8:06















            up vote
            0
            down vote










            up vote
            0
            down vote









            Work-around:



            You can use the Pathological Eclectic Rubbish Lister:



            perl -pe 's/../../g' file


            or inline replace:



            perl -pie 's/../../g' file


            This works for the cases where I use sed. If things get more complicated I write a small python script.






            share|improve this answer














            Work-around:



            You can use the Pathological Eclectic Rubbish Lister:



            perl -pe 's/../../g' file


            or inline replace:



            perl -pie 's/../../g' file


            This works for the cases where I use sed. If things get more complicated I write a small python script.







            share|improve this answer














            share|improve this answer



            share|improve this answer








            edited Nov 27 at 8:05

























            answered Nov 26 at 15:30









            guettli

            66142063




            66142063












            • Well that's great for substitution, but how would you do other sed stuff in Perl? like for example /delete this line/ d
              – wjandrea
              Nov 26 at 15:34








            • 1




              The most promising thing I found after a quick search is s2p (sed to Perl), though I just tried it and the output was VERY verbose.
              – wjandrea
              Nov 26 at 16:00








            • 1




              @wjandrea I updated the answer: "This works for the cases where I use sed. If things get more complicated I write a small python script."
              – guettli
              Nov 27 at 8:06




















            • Well that's great for substitution, but how would you do other sed stuff in Perl? like for example /delete this line/ d
              – wjandrea
              Nov 26 at 15:34








            • 1




              The most promising thing I found after a quick search is s2p (sed to Perl), though I just tried it and the output was VERY verbose.
              – wjandrea
              Nov 26 at 16:00








            • 1




              @wjandrea I updated the answer: "This works for the cases where I use sed. If things get more complicated I write a small python script."
              – guettli
              Nov 27 at 8:06


















            Well that's great for substitution, but how would you do other sed stuff in Perl? like for example /delete this line/ d
            – wjandrea
            Nov 26 at 15:34






            Well that's great for substitution, but how would you do other sed stuff in Perl? like for example /delete this line/ d
            – wjandrea
            Nov 26 at 15:34






            1




            1




            The most promising thing I found after a quick search is s2p (sed to Perl), though I just tried it and the output was VERY verbose.
            – wjandrea
            Nov 26 at 16:00






            The most promising thing I found after a quick search is s2p (sed to Perl), though I just tried it and the output was VERY verbose.
            – wjandrea
            Nov 26 at 16:00






            1




            1




            @wjandrea I updated the answer: "This works for the cases where I use sed. If things get more complicated I write a small python script."
            – guettli
            Nov 27 at 8:06






            @wjandrea I updated the answer: "This works for the cases where I use sed. If things get more complicated I write a small python script."
            – guettli
            Nov 27 at 8:06




















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