Difference between revisions of "Special Matching Characters"

Revision as of 21:41, 6 February 2017

The following special matching characters are defined. They can be used in both the search string and replacement string of a regular expression.

\b

Matches the ASCII backspace character (hex 08).

\dDDD

Matches the character with decimal value ‘DDD’. All three digits MUST be present. “\d010” does not work in the search string; use “\N” instead.

\e

Matches the ASCII <Esc> character (hex 1B).

\f

Matches the ASCII Form-feed character (hex 0C).

\hHH

Matches the character with hexadecimal value ‘HH’. Both digits MUST be present. “\h0A” does not work in the search string; use “\N” instead.

\n

Matches the Line-Feed character (hex 0A). This is the “newline” character for UNIX type text files. To search for multiple-line patterns, use “\N” instead.

\N

Matches the “newline” character(s) and allows searching for multiple line patterns. The “newline” depends upon the current file type and can be <CR><LF>, <LF> or <CR>. (Currently, “\N+” and “\N*” are not supported.)

\oOOO

Matches the character with octal value ‘OOO’. All three digits MUST be present. “\o012” does not work in the search string; use “\N” instead.

\r

Matches the ASCII Carriage-Return character (hex 0D).

\s

Matches the ASCII space character (hex 20).

\t

Matches the ASCII Tab character (hex 09)

\0

Matches the ASCII Null character (hex 00)

\@(r)

Use the contents of text register ‘r’ in this position in the search (or replace) string.

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