tcsh and colors

On Wed, 11 Jul 2007 13:38:15 -0000, markryde@gmail.com
wrote:
>
>
> Hello,
>
> This may seems a little issue but it annoys me:
>
> I use tcsh (on Linux).
>
> in /root/.tcsh , I have
> set prompt = "%{\033[34m%}%B %m:%/%#%b "
> which sets the prompt to blue.
>
> changing it to
> set prompt = "%{\033[32m%}%B %m:%/%#%b"
> sets the prompt to green.
>
> set prompt = "%{\033[31m%}%B %m:%/%#%b"
> sets the prompt to green.
>
[31m is red on my machine. What terminal are you using? You can set
background color with [4?m, or both at once with [3?;4?m.
If you are using the text mode console, try "man console_codes". See
below for xterm. Also, "man 5 terminfo" contains information about
terminfo codes that can be used with the tput command.

> But I don't have all the colors here; for example, I don't have
> **brown** where I can have brown in bash for example. And I am used to
> assign this color to a certain type of machine
> (I can have , as said, brown color in bash).
>
>>From where are these color definitions come ?
> Any suggestion what should I do to create a prompt in brown in tcsh ?
>
Look for a file called ctlseqs.ms.gz, which should be in
/usr/share/doc/xterm. To get a readable form of this document, gunzip
it and use groff -ms -Tascii (you must have the full groff package
installed, not just groff-base). This contains more than you will ever
want to know about xterm escape sequences, so search for the word
"color".


--
"The wages of sin are death; but after they're done taking out taxes,
it's just a tired feeling:"

Bill Marcum wrote:
>> But I don't have all the colors here; for example, I don't have
>> **brown** where I can have brown in bash for example. And I am used to
>> assign this color to a certain type of machine
>> (I can have , as said, brown color in bash).
>>
>> From where are these color definitions come ?
>> Any suggestion what should I do to create a prompt in brown in tcsh ?
>
> Look for a file called ctlseqs.ms.gz, which should be in
> /usr/share/doc/xterm.

See also:
http://frexx.de/xterm-256-notes/

..which shows the 16 color mode common to most terminal programs
(konsole/xterm/Terminal(OSX)/etc), and also describes how to enable
the 256 color mode (special compile of xterm).

I've found that some terminals show 'yellow' ([33m) as either
orange, or in some cases 'brown'.

The colors do not have anything to do with the shells, it has more
to do with the terminal program's capabilities that you're viewing
the shell with.

Greg Ercolano wrote:
> Bill Marcum wrote:
>>> But I don't have all the colors here; for example, I don't have
>>> **brown** where I can have brown in bash for example. And I am used to
>>> assign this color to a certain type of machine
>>> (I can have , as said, brown color in bash).
>>>
>>> From where are these color definitions come ?
>>> Any suggestion what should I do to create a prompt in brown in tcsh ?
>>
>> Look for a file called ctlseqs.ms.gz, which should be in
>> /usr/share/doc/xterm.

It's in xterm's tar ball as well - see my webpage.

> See also:
> http://frexx.de/xterm-256-notes/

> ..which shows the 16 color mode common to most terminal programs

It's not (not "common to most"). The example there shows the effect of
bold fonts on terminals that act like PC's (e.g., CGA/VGA displays).
For example

http://en.wikipedia.org/wiki/Color_Graphics_Adapter
http://en.wikipedia.org/wiki/VGA

(but keep in mind that wikipedia is not _authoritative_ - ctlseqs.ms
on the other hand is...)

It's no more a separate color than using the blinking attribute which
happens to do something similar on some terminals. The same applies to
other non-color video attributes such as underline - which are rendered
as specific colors on terminals. From the application's viewpoint, it
only knows that it requested a bold font.

xterm does that, plus a 16-color mode (from aixterm).

It's not in any standard, ANSI or otherwise (nor is the use of color to
render non-color video attributes).

I noticed recently that one of wikipedia's
links contains that - and cites the aixterm sequences (incorrectly):

http://en.wikipedia.org/wiki/ANSI_escape_code

( I repaired some of it ;-)

--
Thomas E. Dickey
http://invisible-island.net
ftp://invisible-island.net