[bug #59062] po.m4: LINGUAS check should exclude .po files for unrelated languages

[Bruno Haible]

Update of bug #59062 (group gettext):

                Category:                   Build => Programmer tools       
                  Status:             In Progress => Fixed                  
             Open/Closed:                    Open => Closed                 

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Follow-up Comment #4:

Thanks for noticing that my commit was not consistent with the documentation.

po.m4 implements the desirable behaviour: It allows the installer to do

LINGUAS=pt ./configure

and get pt.mo installed, and to do

LINGUAS=pt_BR ./configure

and get pt.mo, pt_BR.mo installed.

Regarding Chinese, it is more useful to be able to do

LINGUAS=zh_TW ./configure

and get zh_TW.mo installed, than to be able to do

LINGUAS=zh ./configure

and get zh_CN.mo and zh_TW both installed.

I have therefore updated the documentation:
https://git.savannah.gnu.org/gitweb/?p=gettext.git;a=commitdiff;h=b147f89713702b54ee25ad2101366f3927766d3b

> - ISO 639 is a group of several standards. Language codes can be two-letter
or three-letter. (https://en.wikipedia.org/wiki/ISO_639)

Good point. Fixed through the doc change.

> - Potential _*, .*, @* parts of names of .po files are not mentioned.

It is mentioned in some places. No need to mention it each time.

> - Matching is not described.

It doesn't need to be described; it's an internal detail.


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