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  1. #!/bin/bash
  2.  
  3. awk 'BEGIN { RS=ORS="===="}
  4. /(^|\n)\.[^\n]*\n\[%collapsible]/{
  5.   sub(/(^|\n)\.[^\n]*\n\[%collapsible]/, ""); print; p=1; next }
  6. !(p && p--)'
Success #stdin #stdout 0.01s 5308KB
comments (?)
stdin 
here is some text
====
foo
====
bar
====
Some text to keep
.Click here to reveal the spoiler
[%collapsible]
====
This is the answer
====
more foo
====
more bar
.not a match
because not collapsible
====
not a match because no dot
[%collapsible] not really
foo bar baz
ick poo
====
this is the end
stdout 
here is some text
====
foo
====
bar
====
Some text to keep
====
more foo
====
more bar
.not a match
because not collapsible
====
not a match because no dot
[%collapsible] not really
foo bar baz
ick poo
====
this is the end====
https://ideone.com/0FwN64
https://stackoverflow.com/questions/78389006/remove-multi-line-pattern-with-sed
language:
Bash (bash 5.0.3)
created:
23 days ago
visibility:
secret

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