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Re: Convert the hexadecimal character code to the corresponding Unicode
From: |
Emanuel Berg |
Subject: |
Re: Convert the hexadecimal character code to the corresponding Unicode value. |
Date: |
Fri, 01 Oct 2021 12:42:25 +0200 |
User-agent: |
Gnus/5.13 (Gnus v5.13) Emacs/28.0.50 (gnu/linux) |
Hongyi Zhao wrote:
> I noticed some comments on the escape syntax used by Emacs
> from here [1-2]. By default, the `describe-char' command
> will give the code point representation of the character in
> hexadecimal and octal formats, say, #o240, #xa0. So, I want
> to if there is a convenient way to do the conversion between
> the hexadecimal character code representation and the
> corresponding Unicode value.
Leads us to the greatest of all human aspirations:
https://www.youtube.com/watch?v=xA6DtpRuvSQ
Convert between bases:
#! /bin/zsh
#
# this file:
# http://user.it.uu.se/~embe8573/conf/.zsh/math
# https://dataswamp.org/~incal/conf/.zsh/math
#
# [...]
change-base () {
local from=$1
local to=$2
local value=$3
echo "obase=$to; ibase=$from; $value" | bc
}
# _16 ->
hex2dec () { change-base 16 10 $1 }
hex2oct () { change-base 16 8 $1 }
hex2bin () { change-base 16 2 $1 }
# _10 ->
dec2hex () {
local dec=$1
local res
res=$(change-base 10 16 $dec)
echo $res:l
}
dec2oct () { change-base 10 8 $1 }
dec2bin () { change-base 10 2 $1 }
# _8 ->
oct2hex () {
local oct=$1
local res
res=$(change-base 8 16 $oct)
echo $res:l
}
oct2dec () { change-base 8 10 $1 }
oct2bin () { change-base 8 2 $1 }
# _2 ->
bin2hex () {
local bin=$1
local res
res=$(change-base 2 16 $bin)
echo $res:l
}
bin2dec () { change-base 2 10 $1 }
bin2oct () { change-base 2 8 $1 }
--
underground experts united
https://dataswamp.org/~incal
Re: Convert the hexadecimal character code to the corresponding Unicode value., Eli Zaretskii, 2021/10/01
Re: Convert the hexadecimal character code to the corresponding Unicode value., Eduardo Ochs, 2021/10/02