UI: Support AND, OR, NOT for Boolean searches

[jamiesnape]

Specific request; apparently all the software for one particular agency uses these keywords.

[manthey]

We support |, &, ! (or -) and ( ). I could make AND OR and NOT map to
those, though that confuses search for text that includes the words
explicitly.

On Thu, Jul 2, 2015 at 10:01 AM, Jamie Snape notifications@github.com
wrote:

Specific request; apparently all the software for one particular agency
uses these keywords.

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#170.

David Manthey
R&D Engineer
Kitware Inc.
(518) 881-4439

[jamiesnape]

The same user had never seen the | symbol, but they immediately wanted to write Boolean searches and said that all their software used capitalized AND OR NOT. I guess the question is how often to people want to search for the textual "and", "or", or "not" on their own? We could still support that as part of a quoted phrase.