Re: [PATCH 1/3] doc-diff: fix non-portable 'man' invocation

> doc-diff invokes 'man' with the -l option to force "local" mode,
> however, neither MacOS nor FreeBSD recognize this option. On those
> platforms, if the argument to 'man' contains a slash, it is
> automatically interpreted as a file specification, so a "local"-like
> mode is not needed. And, it turns out, 'man' which does support -l
> falls back to enabling -l automatically if it can't otherwise find a
> manual entry corresponding to the argument. Since doc-diff always
> passes an absolute path of the nroff source file to 'man', the -l
> option kicks in anyhow, despite not being specified explicitly.
> Therefore, make the invocation portable to the various platforms by
> simply dropping -l.