Syntax
- POSIX style, end of word:
[[:>:]]
- POSIX style, start of word:
[[:<:]]
- POSIX style, word boundary:
[[:<:][:>:]]
- SVR4/GNU, end of word:
\>
- SVR4/GNU, start of word:
\<
- Perl/GNU, word boundary:
\b
- Tcl, end of word:
\M
- Tcl, start of word:
\m
- Tcl, word boundary:
\y
- Portable ERE, start of word:
(^|[^[:alnum:]_])
- Portable ERE, end of word:
([^[:alnum:]_]|$)