anozdrin/alik@quad.opbmk d02459cbae A patch for Bug#34820: log_output can be set to illegal value. ...

We have "set" variables, which can accept empty values
(like sql_mode), and which can not (like log_output). The problem
was that the code does not distinguish them and allow empty
values for every set variable.

The fix is to introduce an attribute of a set variable telling
whether it can accept empty values.

2008-03-28 18:10:04 +03:00

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