When invoking this version of grepmail with perl 5.8.0 all output start with:

Useless (?g) - use /g modifier in regex; marked by <-- HERE in m/(?mg +<-- HERE x)^(From\s.*\d:\d\d:\d\d\s\d{4}| From\s.*\d:\d\d:\d\d\s\d{4}\s[+-]\d{ +4}| From\s.*\d:\d\d\s.*\w{2,3}\s\d{4})$/ + at ./grepmail.orig line 163.

You can use following diff which reduces number of failing test to 55:)

diff grepmail.orig grepmail 161c161 < while($READ_BUFFER =~ m/(?mgx)^(From\s.*\d:\d\d:\d\d\s\d{4}| --- > while($READ_BUFFER =~ m/(?mx)^(From\s.*\d:\d\d:\d\d\s\d{4}|

In reply to Re: Re: grepmail not 5.8.0 safe? by ph0enix
in thread grepmail not 5.8.0 safe? by PetaMem

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