July 2008
Beginner
492 pages
16h
English
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Extended Regular Expressions
We introduced extended regular expressions earlier in the section Extended Regular Expressions. The additional metacharacters available in elvis are:
\|Indicates alternation.
\(...\)Used for grouping, to allow the application of additional regular expression operators.
\+Matches one or more of the preceding regular expressions.
\?Matches zero or one of the preceding regular expressions.
\@Matches the word under the cursor.
\=Indicates where to put the cursor when the text is matched. For instance,
hel\=lowould put the cursor on the second l in the next occurrence of hello.\{...\}Describes an interval expression, such as
x\{1,3\}to match x, xx, or xxx.
POSIX bracket expressions (character classes, etc.) are available.
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