Maxim Cournoyer <maxim.cournoyer@xxxxxxxxx> writes: > I'm not too familiar with the email format; but I presume an empty line > would signal the end of a message? That'd be bad yes, but I think it > cannot currently happen given the 'last if $line =~ /^$/;' guard at in > execute_cmd around line 2023; it'd means headers following an empty line > would be discarded though. The expected use case is indeed for a user's > script to produce RFC 2822 style headers to messages. Yes, silently discarding the end-user input is what I meant by a disaster. > The former (a true default with no way to turn it off other than > redefining it), which I believe is the same behavior as for --cc-cmd or > --to-cmd. There are no '--no-cc-cmd' or '--no-to-cmd' options, although > their result can be filtered via the '--no-cc' and '--no-to' options. Yup. > Looking in the source, options supporting '--no-' always appear to be > boolean toggles (on/off) though, so I'm not sure how a '--no-header-cmd' > that take a value can currently be implemented. Perhaps it could be > added later if there is a need? Perhaps we can do without a configuration variable first, and perhaps the variable could be added later if there is a need and a proper way to turn it off per invocation basis. > I've extracted such postprocessing into fold_headers and applied > execute_cmd to it in new invoke_header_cmd subroutine. Sounds like a good approach (without looking the actual patch). Thanks.