Re: [WIP-PATCHES] Lisp (and Scheme) jump format specifier and ngettext

[Miguel Ángel Arruga Vivas]

Hi Bruno,

Bruno Haible <bruno@clisp.org> writes:

> [...]
> This applies also to the other types of format strings: Omitting a
> variable in msgid_plural that is not of type integer should be invalid,
> i.e. produce an error in 'msgfmt -c'. For example in C:
>
>   # Invalid: omitting a string-typed variable
>   msgid "%s's %u thing"
>   msgid_plural "%s's %u things"
>   msgstr[0] "the %2$u thing"
>   msgstr[1] "the %s's %u things"
>
> Right?

This currently fails for another reason; it says:

  'msgstr[0]' is not a valid C format string, unlike
  'msgid_plural'. Reason: The string refers to argument number 2 but
  ignores argument number 1.

AFAIK, leaving holes between the parameters provided in the format
string is also undefined behaviour by POSIX-2001; e.g. %d and %f stack
size and alignment may be different, which affects the following
parameters.

Best regards,
Miguel