Re: Doc: typo in config.sgml

>> That's because non-breaking space (nbsp) is not encoded as 0xa0 in
>> UTF-8. nbsp in UTF-8 is "0xc2 0xa0" (2 bytes) (A 0xa0 is a nbsp's code
>> point in Unicode. i.e. U+00A0).
>> So grep -P "[\xC2\xA0]" should work to detect nbsp.
> 
> `LC_ALL=C grep -P "\xC2\xA0"` works for my environment. 
> ([ and ] were not necessary.)
> 
> When LC_ALL is null, `grep -P "\xA0"` could not detect any characters in charset.sgml,
> but I think it is better to specify both LC_ALL=C and "\xC2\xA0" for making sure detecting
> nbsp.
> 
> One problem is that -P option can be used in only GNU grep, and grep in mac doesn't support it.
> 
> On bash, we can also use `grep $'\xc2\xa0'`, but I am not sure we can assume the shell is bash.
> 
> Maybe, better way is use perl itself rather than grep as following.
> 
>  `perl -ne '/\xC2\xA0/ and print' `
> 
> I attached a patch fixed in this way.

GNU sed can also be used without setting LC_ALL:

sed -n /"\xC2\xA0"/p

However I am not sure if non-GNU sed can do this too...

Best reagards,
--
Tatsuo Ishii
SRA OSS K.K.
English: http://www.sraoss.co.jp/index_en/
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