John Beckett wrote:
> Bram Moolenaar wrote:
> >> g and G omit superfluos zeroes, as well as the decimal point:
> >>
> >> double n = 12;
> >> printf("%g\n", n); // prints 12
> >> printf("%#g\n", n); // prints 12.0000
> >
> > Vim is already using %g. For me the results are different.
>
> In Vim, the code in vim_snprintf() (in message.c) replaces 'g' with
> 'f' for a small value like 12, so Vim does not give the result quoted
> above. However, "standard" printf should do what I said (see [1]).
I forgot about that. I'll have to look into it again.
> I am one of those who are inclined to NOT complicate the Vim source by
> attending to details of handling floating point, so I would live with
> the current situation. However, it did occur to me that you might
> contemplate whether a config build option could specify if the native
> snprintf() should be used. Then if someone wants "standard" printf,
> they could build Vim so vim_snprintf() calls the version supplied by
> their library.
We can't use the native snprintf() directly, because it may crash Vim.
Instead we use a wrapper, but still rely on the library .*printf
functions to do the actual Float to String conversion.
I also want to minimize configure options, because the behavior should
be predictable. Esp. for binaries included with a distribution.
> Or, the code in vim_snprintf() could be made a little more complex by
> NOT replacing 'g' with 'f'. I'll have a go at that if you like (needs
> a little care to be sure we won't overflow the tmp buffer).
I added that code for a reason. But I have to be careful not to depend
on the FreeBSD specific implementation.
--
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/// Bram Moolenaar -- [EMAIL PROTECTED] -- http://www.Moolenaar.net \\\
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