Errors would be improved by replacing `[stdin]` with the file name if it is known about upgrade-scripts-for-0.17 HOT 3 CLOSED

I also got this error: open lib/github.com/xiaq/edit.elv: is a directory. The error is self explanatory, and due to an unusual name for an Elvish package (see https://github.com/xiaq/edit.elv). It's probably not worth complicating the implementation to suppress the message in this case but I'm mentioning it because any error is likely to surprise a user.

from upgrade-scripts-for-0.17.

I also got this error in response to running upgrade-scripts-for-0.17 -w **.elv. It was not at all obvious where it originated:

parse error: should be ')'
[stdin], line 47: 	}

I tracked it down to my lib/semver.elv module I was working on before realizing @zzamboni had already solved the semver problem and abandoned work on my implementation. I did have a syntax error. Apparently I was in the middle of augmenting the logic and neglected to add a right-paren to the (and... expression in this block of code at the time I abandoned work on my module:

    for i (range $min-len) {
        if (and (re:match '^\d+$' $l1[$i]) (re:match '^\d+$' $l2[$i]) {
            # Both prerelease components are numbers so compare them numerically.
        }
    }

from upgrade-scripts-for-0.17.

I believe the issues are resolved. Let me know if I missed anything.

from upgrade-scripts-for-0.17.