Re^8: Regex Optional capture doesn't (solved !)

my proposition from the edit here works for me with your data:

  
  DB<132> p $x
<blah1 phase="2" type="MyType" more_keys="Values" <Unwanted/>  <SomeTa
+gIwant><k1="v1"></SomeTagIwant>

  DB<133> $re = qr/\btype="([^"]+)".+?<(\w+TagIwant\b|$)/


  DB<134> print join "|", $x =~ $re
MyType|SomeTagIwant
[download]

update

  DB<154> p $x
<blah1 phase="2" type="MyType" more_keys="Values" <Unwanted/>  <SomeTa
+gIwant><k1="v1"></SomeTagIwant>

  DB<155> p $y
<blah1 phase="2" type="MyType" more_keys="Values" <Unwanted/>


  DB<156> $re = qr/ \btype = "([^"]+)" .+?  (?: < ( \w+TagIwant)\b | $
+ ) /x


  DB<157> print join "|", $x =~ $re
MyType|SomeTagIwant

  DB<158> print join "|", $y =~ $re
MyType|
[download]

Cheers Rolf
_{(addicted to the Perl Programming Language and ☆☆☆☆ :)

Je suis Charlie!}

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Re^9: Regex Optional capture doesn't (solved ?) by NetWallah (Canon) on Oct 05, 2017 at 18:33 UTC
Excellent - your "Update" one works ! The pre-update fails when the tag is absent. I saw this the same time as hauxex's working solution, below .. So I declare both winners ! Thanks. All power corrupts, but we need electricity.	[reply]