![]() ![]() "\111" would be interpreted as the 11th backreference,įollowed by a literal '1'. If more than two decimal digits follow the backslash, only theįirst two are considered part of the backreference. Single byte with octal value 7 (equivalent to "\x07"). Thus, the character class "" will match a Reference from the least significant eight bits of the Three octal digits generates a single byte character Inside a character class, a backslash followed by up to Null followed by the two characters "8" and "1" "\81" is a backreference if there areĨ1 or more captured subpatterns, but matches an ASCII There are 11 or more sets of capturing parenthesis in So, in a search pattern, "\11" is a backreference if Any subsequent digits stand for themselves. Look for up to three octal digits following theīackslash. If there are fewer than NĬaptured subpatterns, the grep engine will instead Subpattern, *if* there exist N capturing sets of Taken together form the integer N (ranging from 10 toĩ9), is a backreference to the Nth captured Nine is always a backreference to the Nth capturedĪ backslash followed by two decimal digits, which Null followed by the digit 8 (because octal charactersĪ backslash followed by a single decimal digit from one to Match the ASCII BEL (\x07), but "\08" will match an ASCII Thus, "\040" will match a space character, and "\07" will Up to two further octal characters are read. The following charts explain the rules BBEdit uses for determining backreferences.Ī backslash followed by a zero is an octal character ![]() This limitation is removed in BBEdit 6.5. The grep engine used in previous versions of BBEdit was unable to search text that contained null characters (ASCII value zero). In many cases, the basic grep syntax covered previously in this chapter will be all that you need. The best way to learn grep is to use it in real life, not by reading example patterns. If you are new to grep, it is possible that the topics covered in this section will not make much sense to you. ![]()
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