Searching for single character without anything around it , possible ?

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Hi,
I've remembered that some implementations of RegExp has a '\b' sign ,
e.g \bi\b means an character `i' without anything around it , does vim
support it ?

:help regular-expression seems to have that expression , but no much
documents about it.

Consider this: int i = 0 ; i < numOfServ ; i ++
And i'd like to replace the single `i' with j , so i tried s/\bi\b/j/g
, not working ? Or maybe something else , anyone could help ?

Thanks in advance !

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Best Regards,
Aaron Lewis - PGP: 0x4A6D32A0
FingerPrint EA63 26B2 6C52 72EA A4A5 EB6B BDFE 35B0 4A6D 32A0
irc: A4R0NL3WI5 on freenode
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iEYEARECAAYFAkxT3/wACgkQvf41sEptMqB/zACgw5o+ddyrH9so31APTpkm6z/5
nmoAoKY1g8RJiqnscx/Gd9cMfWGFJnWr
=UsVU
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