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Re: getprogname and libtool


From: Jim Meyering
Subject: Re: getprogname and libtool
Date: Sun, 18 Dec 2016 02:23:38 -0800

On Sat, Dec 17, 2016 at 3:27 PM, Bruno Haible <address@hidden> wrote:
> Followup to this discussion from October 2016:
>
> Jim:
>> > I did not mean to imply by that message that we should eliminate every
>> > use of the program_name module. My desire is more to avoid accidental
>> > use of it when the getprogname module would be more appropriate.
>
> Bruno:
>> Fully agree on this.
>>
>> The way I currently see it, the two modules serve different purposes
>> and it's easy to decide which one to use in which case:
>>
>>   * In a program's main() function, and associated usage() and help()
>>     functions, use set_program_name and program_name.
>>
>>     Rationale: This provides the full name of the executable, and discards
>>     the "lt-" prefix.
>>
>>   * In library code, or more generally any code that is not near the
>>     main() function, use getprogname().
>>
>>     Rationale: This makes it possible to put this library code under LGPL
>>     and avoid the many linker errors to 'program_name' that people have
>>     been seeing.
>
> In consequence, I'm editing NEWS accordingly.
>
>
> 2016-12-17  Bruno Haible  <address@hidden>
>
>         Un-deprecate the 'getprogname' module.
>         * NEWS: Describe the appropriate use-cases of 'progname' versus
>         'getprogname'. Based on discussion summary at
>         http://lists.gnu.org/archive/html/bug-gnulib/2016-10/msg00105.html
>
> diff --git a/NEWS b/NEWS
> index 07ca87e..fbbf6f2 100644
> --- a/NEWS
> +++ b/NEWS
> @@ -3,6 +3,16 @@ Important general notes
>
>  Date        Modules         Changes
>
> +2016-09-05  progname        There is now an alternate module 'getprogname'. 
> It
> +                            defines a getprogname() function; use it to 
> obtain
> +                            the name of the current program.
> +                            Recommended use:
> +                            - In a program's main() function, and associated
> +                              usage() and help() functions, use 'progname'.
> +                            - In library code, or more generally any code 
> that
> +                              is not near the main() function, use
> +                              'getprogname'.
> +

Looks good. Thank you, Bruno.



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