[Koha-bugs] [Bug 33100] Authority linking doesn't work for bib headings ending in two or more punctuation characters

[bugzilla-daemon at bugs.koha-community.org]

https://bugs.koha-community.org/bugzilla3/show_bug.cgi?id=33100

--- Comment #4 from Phil Ringnalda <phil at chetcolibrary.org> ---
Whether or not you can have collisions depends on what heading rules you
catalog under, but at least for Library of Congress/NACO rules you're pretty
safe: a heading has to be unique after
https://www.loc.gov/aba/pcc/naco/normrule-2.html#a is applied, which removes or
blanks most punctuation. While Foo&, Foo#, and Foo are validly three different
names (which is fine, we don't strip & or #), Foo-, Foo., Foo:, Foo=, Foo;,
Foo%, Foo/, and Foo are all the same name so only one of them can exist.

Comma is a little bit fun, because normalization says that the "first comma in
$a  is retained" but doesn't say "only if there is something following it" so
technically if there's already someone named "Foo" it would be valid to have
someone else named "Foo," but at least so far people giving themselves
Cher-like single names don't seem very fond of having a trailing comma as part
of their actual name.

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