latex3/svn-mirror — Issue #47: Message management for expandable errors
Author: blefloch
Created: 2011-10-22 07:48:33+00:00
State: open

`\msg_expandable_error:n` is currently doing what we really don't like about LaTeX2e's `\PackageError`: mixing the error messages into the code. I haven't looked at the `l3msg` module long enough to think of how the management could take place.

Probably, `l3msg` uses props a lot. For an expandable version, the expandable `\prop_get:Nn` and `\prop_if_in:NnTF` will be useful.