Re: [PATCH v4 27/38] i18n: config: unfold error messages marked for translation

Vasco Almeida [off-list ref] writes:

Introduced in 473166b ("config: add 'origin_type' to config_source
struct", 2016-02-19), Git can inform the user about the origin of a
config error, but the implementation does not allow translators to
translate the keywords 'file', 'blob, 'standard input', and
'submodule-blob'. Moreover, for the second message, a reason for the
error is appended to the message, not allowing translators to translate
that reason either.

Unfold the message into several templates for each known origin_type.
That would result in better translation at the expense of code
verbosity.

Add enum git_config_oringin_type to ease management of the various
configuration origin types (blob, file, etc).

For the first instance, use xstrfmt() function to prepare the message
string, instead of doing something like it's done for the second one,
because intelligibility and code conciseness are improved for that
instance.

Hmph, this step somehow interacts badly with what is queued on 'pu'.