Ivan Sergio Borgonovo <m...@webthatworks.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. -Kevin
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