[Pyparsing] Bug report: setResultsName works inconsistently on Optional in Each

[Max Rothman]

It seems that Optional.setResultsName joined by Each does not behave

(Optional('foo')('one') & pp.Optional('bar')('two')).parseString('foo

bar')
(['foo', 'bar'], {})

(Optional('bar')('two') & Optional('foo')('one')).parseString('foo bar')

(['foo', 'bar'], {'two': [('bar', 1)]})

(Optional(Literal('bar')('two')) &

Optional(Literal('foo')('one'))).parseString('foo bar')
(['foo', 'bar'], {'two': [('bar', 1)], 'one': [('foo', 0)]})

(Optional(Literal('foo')('one')) &

Optional(Literal('bar')('two'))).parseString('foo bar')
(['foo', 'bar'], {'two': [('bar', 1)], 'one': [('foo', 0)]})

(Optional('foo')('one') + pp.Optional('bar')('two')).parseString('foo

bar')
(['foo', 'bar'], {'two': [('bar', 1)], 'one': [('foo', 0)]})

Thanks,
Max

[Paul McGuire]

Nice report, Max, especially boiling the bug repro down to a single
statement - very helpful!

Just finishing the check-in of a fix to SourceForge SVN, will be included in
the next release.

-- Paul



-----Original Message-----
From: Max Rothman [mailto:***@gmail.com]
Sent: Sunday, November 08, 2015 8:15 PM
To: pyparsing-***@lists.sourceforge.net
Subject: [Pyparsing] Bug report: setResultsName works inconsistently on
Optional in Each

It seems that Optional.setResultsName joined by Each does not behave

(Optional('foo')('one') &
pp.Optional('bar')('two')).parseString('foo

bar')
(['foo', 'bar'], {})

(Optional('bar')('two') & Optional('foo')('one')).parseString('foo bar')

(['foo', 'bar'], {'two': [('bar', 1)]})

(Optional(Literal('bar')('two')) &

Optional(Literal('foo')('one'))).parseString('foo bar') (['foo', 'bar'],
{'two': [('bar', 1)], 'one': [('foo', 0)]})

(Optional(Literal('foo')('one')) &

Optional(Literal('bar')('two'))).parseString('foo bar') (['foo', 'bar'],
{'two': [('bar', 1)], 'one': [('foo', 0)]})

(Optional('foo')('one') +
pp.Optional('bar')('two')).parseString('foo

bar')
(['foo', 'bar'], {'two': [('bar', 1)], 'one': [('foo', 0)]})

Thanks,
Max
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