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Re: .substring bug - indicies don't work as documented(?)


From: Werner LEMBERG
Subject: Re: .substring bug - indicies don't work as documented(?)
Date: Sun, 28 Oct 2001 14:12:33 +0100 (CET)

> Languages seem to do it all kinds of ways.
>
>     % python
>     >>> s = 'abcdefg'
>     >>> s[1]
>     'b'
>     >>> s[1:1]
>     ''
>     >>> s[1:2]
>     'b'
>     >>> s[0:2]
>     'ab'
>     >>> s[-2]
>     'f'
>     >>> s[-2:]
>     'fg'

Emacs Lisp's `substring' command behaves identically.  I'm more and
more convinced that it is a good idea to make groff's .substring
request work similar.

While this is an incompatible change, it is an improvement IMHO.  Any
objections?


    Werner



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