|
| From: | Emanuel Berg |
| Subject: | Re: [External] : Re: Regexp for matching control character, say, FORM FEED. (Was: Re: The `^L' appeared in built-in help.) |
| Date: | Sun, 01 Aug 2021 04:31:03 +0200 |
| User-agent: | Gnus/5.13 (Gnus v5.13) Emacs/28.0.50 (gnu/linux) |
tomas wrote:
> For example, why ^L? Because form feed is at point 12 (in
> decimal) in the ascii table, and L at point 76, the
> difference being 64. What happens is that the "^" "subtracts
> 64 from the character code", or more precisely masks out bit
> 6 of its binary representation.
Cool :)
$ ascii -t L @ ff | awk '{print $5}'
01001100
01000000
00001100
--
underground experts united
https://dataswamp.org/~incal
| [Prev in Thread] | Current Thread | [Next in Thread] |