Correct optimization from 3464f5e77f34; add a test.
If there are two (or more) heads that point to the same .hgtags
node, we can safely skip parsing the file in all but the last head.
(In 3464f5e77f34, we were parsing the file in the first head and
skipping all the others.)
[('bool1', 'true'), ('bool2', 'false'), ('string', 'string value')]
[('list1', 'foo'), ('list2', 'foo bar baz'), ('list3', 'alice, bob'), ('list4', 'foo bar baz alice, bob')]
Error in configuration section [interpolation]:
'%' must be followed by '%' or '(', found: '%bad2'
---
'string value'
'true'
'false'
None
---
Not a boolean: string value
True
False
False
False
True
---
['foo']
['foo', 'bar', 'baz']
['alice', 'bob']
['foo', 'bar', 'baz', 'alice', 'bob']
['foo', 'bar', 'baz', 'alice', 'bob']
[]
[]
['foo']
['foo']
['foo', 'bar']
['foo', 'bar']
['foo bar']
['foo', 'bar']
---
'hallo'
'hallo world'
Error in configuration section [interpolation] parameter 'value3':
Bad value substitution:
section: [interpolation]
option : value3
key : novalue
rawval :
Error in configuration section [interpolation] parameter 'value4':
bad interpolation variable reference '%(bad)1'
Error in configuration section [interpolation] parameter 'value5':
'%' must be followed by '%' or '(', found: '%bad2'
---