* Sergey Poznyakoff <g...@gnu.org.ua> [2021-06-08 08:14]: > Jean Louis <bugs@gnu.support> ha escrit: > > > In order to guess the content-type, I am using these functions. It > > appears that Perl's `mimetype' works so much better than `file', for > > example it will give tell for .gpg file that it is pgp encrypted, but > > `file' will tell it is application octet stream. > > That depends only on the set of "magic" files your installation of > "file" is using (/etc/file/magic).
$ file --mime-type test.gpg test.gpg: application/octet-stream ~ $ mimetype -i test.gpg test.gpg: application/pgp-encrypted in this case Perl's tool gives better result. I did not research all command line parameters. Best would be to avoid any of external tools. > > Overall I am replacing some `mutt' based functions with `mail' and > > that works well so far. But `mutt' on the command line in batch mode > > does recognize the attached file's content type while `mail' does not. > > > > I understand that `mail' is asking for the content-type to be provided > > by user, though question is if some mechanism exists in C libraries > > that the content-type gets automatically recognized if not supplied on > > the command line? > > Yes, mailutils provides mailcap functions designed expressly for that > purpose. It would be nice to modify mail to use them. Do you think recognition would be "pretty" accurate? Jean Take action in Free Software Foundation campaigns: https://www.fsf.org/campaigns In support of Richard M. Stallman https://stallmansupport.org/
