tim peters:
> The PRE documentation expresses the true intent:
>
> \number
> Matches the contents of the group of the same number. Groups
> are numbered starting from 1. For example, (.+) \1 matches 'the the'
> or '55 55', but not 'the end' (note the space after the group). This
> special sequence can only be used to match one of the first 99 groups.
> If the first digit of number is 0, or number is 3 octal digits long,
> it will not be interpreted as a group match, but as the character with
> octal value number.
yeah, I've read that. clear as coffee.
but looking at again, I suppose that the right way to
implement this is (doing the tests in the given order):
if it starts with zero, it's an octal escape
(1 or 2 octal digits may follow)
if it starts with an octal digit, AND is followed
by two other octal digits, it's an octal escape
if it starts with any digit, it's a reference
(1 extra decimal digit may follow)
oh well. too bad my scanner only provides a one-character
lookahead...
</F>
RetroSearch is an open source project built by @garambo | Open a GitHub Issue
Search and Browse the WWW like it's 1997 | Search results from DuckDuckGo
HTML:
3.2
| Encoding:
UTF-8
| Version:
0.7.4