`reprun` : can't handle file with compounded strings in some very specific cases.

[kbjarkefur]

We can build on a solution I did to a similar issue in a different package

https://github.com/lsms-worldbank/adodown/blob/02a59789a0aff134083af3349944254a5c35c68a/src/ado/ad_publish.ado#L137-L141

[kbjarkefur]

Wont fix until we have a reproducible example