tree d51d049bdca8011eab94b8803eb3b19dbfd3a64b
parent 397826aedc75584e5a1f6e52a9ae4f2f4c1bd5a5
author Thierry FOURNIER <tfournier@exceliance.fr> 1426101216 +0100
committer Willy Tarreau <w@1wt.eu> 1426102009 +0100
encoding latin1

MINOR: lua: fetches and converters can return an empty string in place of nil

In some cases we don't want to known if a fetch or converter
fails. We just want a valid string. After this patch, we
have two sets of fetches and two sets of converters. There are:
txn.f, txn.sf, txn.c, txn.sc. The version prefixed by 's' always
returns strings for any type, and returns an empty string in the
error case or when the data are not available. This is particularly
useful when manipulating headers or cookies.