github.com/benhoyt/goawk@v1.8.1/testdata/gawk/noloop1.awk (about)

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    36  # Date: Sun, 6 Oct 2002 08:36:54 -0400
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    39  # Subject: Infinite loop in sub/gsub
    40  # From: jhart@avcnet.bates.edu
    41  # To: bug-gawk@gnu.org
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    52  # 
    53  # This command line:
    54  # 
    55  # echo "''Italics with an apostrophe'' embedded''"|gawk -f test.awk
    56  # 
    57  # where test.awk contains this instruction:
    58  # 
    59  /''/  { sub(/''(.?[^']+)*''/, "<em>&</em>"); }
    60  # 
    61  # puts gawk 3.11 into an infinite loop. Whereas, this command works:
    62  # 
    63  # echo "''Italics with an apostrophe' embedded''"|gawk -f test.awk
    64  # 
    65  # 
    66  # 
    67  # Platform: Mac OS X 10.1.5/Darwin Kernel Version 5.5: Thu May 30 14:51:26 
    68  # PDT 2002; root:xnu/xnu-201.42.3.obj~1/RELEASE_PPC
    69  # 
    70  #