Datasheet

Metacharacters - Subexpressions

The bracketing construct ( ... ) may also be used for define regular subexpres-

sions. Subexpressions are numbered based on the left to right order of their open-

ing parenthesis. First subexpression has number '1'

Examples:

(int){8,10} matches strings which contain 8, 9 or 10 instances of the

'int'

routi([0-9]|a+)e

matches 'routi0e', 'routi1e' , 'routine',

'routinne', 'routinnne' etc.

Metacharacters - Backreferences

Metacharacters \1 through \9 are interpreted as backreferences. \ matches previ-

ously matched subexpression #.

Examples:

(.)\1+ matches 'aaaa' and 'cc'.

(.+)\1+ matches 'abab' and '123123'

(['"]?)(\d+)\1

matches "13" (in double quotes), or '4' (in single quotes)

or 77 (without quotes) etc

MIKROELEKTRONIKA - SOFTWARE AND HARDWARE SOLUTIONS FOR EMBEDDED WORLD

Environment

mikroC PRO for AVR

CHAPTER 2