Ivan Sergio Borgonovo <mail(at)webthatworks(dot)it> wrote:
> There are a lot of functions in contrib taking cstring input and
> returning cstring output.
> Are they just in the same "special" class of [type]in, [type]out
> [type]recv... functions?
If you're looking in contrib subdirectories, perhaps the missing
link here is the *.sql.in files. These are what are run in a
database to expose functions to the SQL language. Start at those
functions and see what the call tree is from there.
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