[MPlayer-users] dots, internationalization and floating numbers

[Artem Astafyev]

While experimenting with pan filter, I've messed with strange behaviour 
with floating numbers. The problem is that not in all locales decimal 
point delimeter is dot. For example, I use ru_RU locale and decimal 
point delimeter is coma. So I get such things, which many users noted:

LANG=ru_RU;mplayer -ao alsa9:surround51 -af pan=3:1:0:0:1:0.5:0.5 -v 
-channels 3 movie.avi

Checking audio filter chain for 48000Hz/2ch/16bit -> 48000Hz/3ch/16bit...
[libaf] Adding filter pan
[pan] Pan level from channel 0 to channel 0 = 1,000000
[pan] Pan level from channel 1 to channel 0 = 0,000000
[pan] Pan level from channel 2 to channel 0 = 0,000000
[pan] Pan level from channel 0 to channel 1 = 1,000000
[pan] Pan level from channel 1 to channel 1 = 0,000000
[libaf] Adding filter format
[format] Changing sample format from 16bit little endian signed int to 
32bit little endian float
AF_pre: af format: 4 bps, 3 ch, 48000 hz, little endian float

LANG=;mplayer -ao alsa9:surround51 -af pan=3:1:0:0:1:0.5:0.5 -v 
-channels 3 movie.avi

Checking audio filter chain for 48000Hz/2ch/16bit -> 48000Hz/3ch/16bit...
[libaf] Adding filter pan
[pan] Pan level from channel 0 to channel 0 = 1.000000
[pan] Pan level from channel 1 to channel 0 = 0.000000
[pan] Pan level from channel 2 to channel 0 = 0.000000
[pan] Pan level from channel 0 to channel 1 = 1.000000
[pan] Pan level from channel 1 to channel 1 = 0.500000
[pan] Pan level from channel 2 to channel 1 = 0.500000
[libaf] Adding filter format
[format] Changing sample format from 16bit little endian signed int to 
32bit little endian float
AF_pre: af format: 4 bps, 3 ch, 48000 hz, little endian float

Maybe this must be noted in documentation? From other side, I can't use 
comas in this case, because coma separates filters names. Or just set 
decimal point delimeter to dot, because it reflects not only on pan 
filter, but on all floating point numbers?
-- 
Best regards,

Artem Astafyev