- BRE:
? + | ( ) { }are REGULAR characters → need\to activate (called Escaping) - ERE:
? + | ( ) { }are METACHARACTERS → need\to make literal
Example:
- BRE:
\+means one or more - ERE:
+means one or more
? + | ( ) { } are REGULAR characters → need \ to activate (called Escaping)? + | ( ) { } are METACHARACTERS → need \ to make literalExample:
\+ means one or more + means one or more