[Bug 1805115] Re: problem with (ubuntu/cosmic)mawk /^[[:space:]]*</

[Utkarsh Gupta]

** Tags added: server-todo

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Title:
   problem with (ubuntu/cosmic)mawk /^[[:space:]]*</

Status in mawk package in Ubuntu:
  Fix Released
Status in mawk source package in Bionic:
  Triaged

Bug description:
  
  #lsb_release -rd

  Description:    Ubuntu 18.10
  Release:        18.10

  ## package version
  #apt-cache policy mawk

  mawk:
    Installed: 1.3.3-17ubuntu3
    Candidate: 1.3.3-17ubuntu3
    Version table:
   *** 1.3.3-17ubuntu3 500
          500 http://archive.ubuntu.com/ubuntu cosmic/main amd64 Packages
          100 /var/lib/dpkg/status
  ###

  more background @ 
  https://github.com/whiteinge/ok.sh/issues/66# problem with (ubuntu/cosmic)mawk /^[[:space:]]*</


  works as expected with literal ' ' white space 
  -----
  printf %s '<https://api.github.com/repositories/3386088/issues?page=2>; rel="next", <https://api.github.com/repositories/3386088/issues?page=33>; rel="last"' | awk '
                  BEGIN { RS=", "; FS="; "; OFS=": " }
                  {
                      sub(/^rel="/, "", $2); sub(/"$/, "", $2)
                      sub(/^ *</, "", $1); sub(/>$/, "", $1)
                      print "Link_" $2, $1
                  }'
  Link_next: https://api.github.com/repositories/3386088/issues?page=2
  Link_last: https://api.github.com/repositories/3386088/issues?page=33
  -----

  fails using [[:space:]]
  eg
  -----
  printf %s '<https://api.github.com/repositories/3386088/issues?page=2>; rel="next", <https://api.github.com/repositories/3386088/issues?page=33>; rel="last"' | awk '
                  BEGIN { RS=", "; FS="; "; OFS=": " }
                  {
                      sub(/^rel="/, "", $2); sub(/"$/, "", $2)
                      sub(/^[[:space:]]*</, "", $1); sub(/>$/, "", $1)
                      print "Link_" $2, $1
                  }'
  Link_next: <https://api.github.com/repositories/3386088/issues?page=2
  Link_last: <https://api.github.com/repositories/3386088/issues?page=33
  -----

  eg :
  https://github.com/dubiouscript/ok.sh/commit/1a6109704653279c21d0b50c34152f674228e1cf

  
  perhaps also relevant 
  https://bugs.launchpad.net/debian/+source/mawk/+bug/69724
  &
  https://bugs.launchpad.net/ubuntu/+source/mawk/+bug/1332114#Please update mawk to latest upstream release

  
  0.O

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