Restricted character set for Github repo names?

[Ben Lavery]

Hello all,

This is my first port, I’m trying to port http://gohugo.io so I may have missed something.

I’ve got my Makefile (copy: https://manaha.co.uk/logsnstuff/gohugo_Makefile_WIP_broken ) but on 10.3 it fails with the following:

> _MASTER_SITES_go-md2man=https://codeload.github.com/cpuguy83/go-md2man/tar.gz/2724a9c?dummy=/: not found
> *** Error code 127


When I tried it on an 11-BETA VM and looked at all errors I got the following:

> + echo 'The https://codeload.github.com/cpuguy83/go-md2man/tar.gz/2724a9c?dummy=/:go-md2man MASTER_SITES line has'
> The https://codeload.github.com/cpuguy83/go-md2man/tar.gz/2724a9c?dummy=/:go-md2man MASTER_SITES line has
> echo "a group with invalid characters, only use [a-zA-Z0-9_]"
> Execute: 'echo "a group with invalid characters, only use [a-zA-Z0-9_]”'



I then forked the repository to my own Github account and removed the hyphen from the repo name.  Modifying my Makefile (copy: https://manaha.co.uk/logsnstuff/gohugo_Makefile_WIP ) it now downloads the repository without an issue.

Is this expected behaviour?  Is it like this for a specific reason?

Kind regards,
Ben
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