Sh: unexpected quoting of schemes in URLs

[fenollp]

Here's how 0.7.2's Sh quotes an URL: CARGO_PKG_REPOSITORY=https'://github.com/RazrFalcon/pico-args'

Given there's no spaces, I'm surprised the colon is interpreted as requiring quotes. The quoted string is not wrong, just unnecessarily quoted.

Maybe there's a bug hiding here?

[allenap]

I grant that it's being fairly conservative in considering : as worth quoting. Maybe that could be relaxed.

This is somewhat related to #8, in that maybe = could also be left unquoted.

I had thought there was an issue relating to making the quoting look more "human", e.g. instead of https'://github.com/RazrFalcon/pico-args' it would produce 'https://github.com/RazrFalcon/pico-args'. The shell is happy with the former, but humans tend to visually prefer the quotes to go at the start and end.

[fenollp]

I believe : could be relaxed.

I have no opinion on the "human" part: that's still a valid quoting sooooo whatever :)