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the core strips characters that aren't [A-Za-z0-9_] which means fields Dón and Dán can't be disambiguated from each other. there are many comments already in the code pointing out this is a BadThing. also, it forces other plugins in the system to know about this procedure (see Item2167)

# Chop out all except A-Za-z0-9_.
# I'm sure there must have been a good reason for this once.
sub _cleanField {
    my( $text ) = @_;
    $text = '' if( ! $text );
    # TODO: make this dependent on a 'character set includes non-alpha'
    # setting in TWiki.cfg - and do same in Render.pm re 8859 test.
    # I18N: don't get rid of non-ASCII characters
    # TW: this is applied to the key in the field; it is not obvious
    # why we need I18N in the key (albeit there could be collisions due
    # to the filtering... but all the current topics are keyed on _cleanField
    $text =~ s/<nop>//go;    # support <nop> character in title
    $text =~ s/[^A-Za-z0-9_\.]//go;
    return $text;

-- WN

Do you have an alternative implementation in mind?


Is there any (really) good reason for removing non-ascii characters from field names?

Just removing this filter wouldn't break applications that don't use international characters in field names ...

-- AT

Some info on this bug at TWiki:Support.InternationalCharactersInFormFields and corresponding Codev page. Thought it was fixed in SVN, probably mainline though...

Other previously logged bugs in I18N are generally at TWiki:Codev.InternationalisationIssues in case anyone wants to go bug-fixing.

-- RD

This is fixed in SVN.

-- SP

Summary I18N: Allow international characters in form field names
ReportedBy TWiki:Main.WillNorris

SVN Range Wed, 26 Apr 2006 build 9917
AppliesTo Engine

Priority Urgent
CurrentState Closed


TargetRelease minor
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Topic revision: r7 - 2007-01-16 - JasonHill
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