From: Oleg Broytman <phd@phdru.name>
Date: Sun, 10 Jul 2016 22:35:47 +0000 (+0300)
Subject: Change grammar to support priority  of operation
X-Git-Tag: v0.4~3
X-Git-Url: https://git.phdru.name/?a=commitdiff_plain;h=4661dada0cb0d3fa6e38bc87d370c56eb062eac8;hp=4661dada0cb0d3fa6e38bc87d370c56eb062eac8;p=phdru.name%2Fcgi-bin%2Fblog-ru%2Fsearch-tags.git

Change grammar to support priority  of operation

Build priority of OR > AND > NOT > () right into the grammar.

Avoid left recursion - PEG parsers don't like it and grako behaves
strange.
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