Strange parsing of name w lastname prefix and title before and after

The combination of having lastname prefixes and repeated titles before and after a name seems to break the parsers logic around middle name handling.

Here's a test that fails:

        hn = HumanName("dr Vincent van Gogh dr")
        self.assertEqual("Vincent", hn.first)
        self.assertEqual("van", hn.middle)
        self.assertEqual("Gogh", hn.last)

For some reason, the middle name comes out as dr Vincent van instead of the expected van.

Current master does this:

% python tests.py "dr Vincent van Gogh dr"
<HumanName : [
	title: 'dr' 
	first: 'Vincent' 
	middle: ' dr Vincent van' 
	last: 'Gogh' 
	suffix: 'dr'
	nickname: ''
]>

Actually this is what I would expect because "van" is a prefix and should attach itself to the following piece.

% python tests.py "dr Vincent van Gogh dr"
<HumanName : [
	title: 'dr' 
	first: 'Vincent' 
	middle: '' 
	last: 'van Gogh' 
	suffix: 'dr'
	nickname: ''
]>

I think this is a valid bug but I'm not sure what the issue is.

actually, "van" is not a prefix because it is sometimes a first name. So you're right, this should be the expected output:

% python tests.py "dr Vincent van Gogh dr"
<HumanName : [
	title: 'dr' 
	first: 'Vincent' 
	middle: 'van' 
	last: 'Gogh' 
	suffix: 'dr'
	nickname: ''
]>

fix: correct suffix boundary lookup for prefixed last names (#100) (#179

Fixed in #179

docs: add missing v1.3.0 changelog entries for #100, #166, #187, #188, …

Add group: piece boundaries by index; joins ported from v1

Restrict name_order to the exported orders; drop dangled ambiguities

Wire Policy.extra_suffix_delimiters through segment and group (v1 suf…

Route suffix-shaped delimited content past nickname extraction (v1 pa…

Fix the last two M12 bugs and lift the reconciliation skip list

Fuzz the configuration surface, not just the input string

fix(vocab,assign): give each title/suffix overlap word its true class…

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Strange parsing of name w lastname prefix and title before and after #100

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Strange parsing of name w lastname prefix and title before and after #100

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derek73 commented on Dec 12, 2019

derek73 commented on Dec 12, 2019

derek73 commented on Jun 29, 2026

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