TIP: Click on subject to list as thread! ANSI
echo: amateur_radio
to: Ed Vance
from: mark lewis
date: 2018-04-18 08:31:14
subject: High ASCII Characters

On 2018 Apr 10 06:58:00, you wrote to Daryl Stout:

 EV> I'm wondering if everyone sees the same thing that I see on my screen.
 EV> Let Me know. Thanks.

the U+2345 stuff is UNICODE... it is not CP437 which you are used to...
CP437 is being forcibly left in the dirt and everything is moving to
UNICODE (aka UTF-8)...

the reason you see the differences that you do is because those characters
that you used to make the band aide are not in the same location in UTF-8
as they are in CP437... CP437 is derived from a byte, 8 bits... because of
that, CP437 is limited to only 256 characters... UTF-8 is four bytes,
32bits, and has 1112064 code points... not characters... each code point
can be a character on its own or it can be combined with other code points
to make other characters...

an example would be something like the o with the rooftop (aka circumflex
SHIFT-6)... in CP437 you see it as ALT-147... in UTF-8 it is U+00F4... how
you would type that on your keyboard, i don't know... the old ALT codes we
used to use are going away and all the characters are moving /except/ for
the letters and basic symbols...

look here: https://en.wikipedia.org/wiki/Code_page_437

i hope you will see the majik... in the chart, you have the character (on
top), the unicode value (in the middle) and the alt value (on the
bottom)...

eg:  “
    00F4
    147

i cannot use the ALT codes any more... now, on my linux, i have to use what
is known as "composing"... to make this character, i have to use
my "compose key" and then the two characters "o" and
"^"... they are composed together to make the final “
character... on my system, when reading these messages, i'm forcing things
into CP437 but these characters like this i see as two characters... in
this case, the tilde "~" and the capital "S"... i don't
see the "o" with the rooftop unless i switch to unicode instead
of CP437...

eventually, all of these fancy things like the bandaid and frame characters
we're used to seeing in the old DOS CP437 world will be harder to do...
especially since much of it is simply being dropped and no one has yet
created a convertor to convert these characters to the UTF-8 equivelent...
there are a few BBSes doing this conversion in code so the old CP437 style
screens can be used... they are actually transmitting the UTF-8 characters
instead of the CP437 characters... it would be nice to have a conversion
program that does the same thing and converts the actual screens... the
thing is, right now, i don't know how that would affect the ANSI color and
cursor positioning codes... probably not but...

hope this helps... i still have to work really hard to wrap my head around it...

)\/(ark

Always Mount a Scratch Monkey
Do you manage your own servers? If you are not running an IDS/IPS yer doin'
it wrong...
... Don't get so tolerant that you tolerate intolerance.
---
* Origin: (1:3634/12.73)
SEEN-BY: 116/116 123/25 120 141 150 755 135/300 153/7715 154/10 20 30 40 700
SEEN-BY: 203/0 221/0 1 6 360 227/400 229/426 261/38 320/219 340/800 460/58
SEEN-BY: 633/0 267 280 281 410 412 640/384 1384 712/620 848 770/1 3634/12 15
SEEN-BY: 3634/22 27 50 119
@PATH: 3634/12 154/10 221/6 0 640/1384 384 712/848 633/280 267

SOURCE: echomail via fidonet.ozzmosis.com

Email questions or comments to sysop@ipingthereforeiam.com
All parts of this website painstakingly hand-crafted in the U.S.A.!
IPTIA BBS/MUD/Terminal/Game Server List, © 2025 IPTIA Consulting™.