Mapping "underline" to "colour" - how is the colour determined?

Mapping "underline" to "colour" - how is the colour determined?

[Ronald Fischer]

When I (to give an example) execute a "man" command within a mintty
window, and do the same within a "normal" Windows console window, I see
that those words represented as underlined words in the mintty
window, are represented by a different colour in the Windows console
windows.

I guess this different has nothing to do with the "man" command, but by
the way the terminal definition says how render "emphasized" words.
Since the Windows console (likely) can't underline, colouring is used.
It's kind of a "terminal property". Do I understand this correctly?

I would like to understand, where this mapping to a certain colour is
done. Reason is that the colour used for my Windows console window, is a
bit hard to read and I would like to change it. 

Any suggestions?

Ronald


-- 
Ronald Fischer <ronaldf@eml.cc>
+  If a packet hits a pocket on a socket on a port, 
+  and the bus is interrupted and the interrupt's not caught,
+  then the socket packet pocket has an error to report.
+		(cited after Peter van der Linden)


-- 
Ronald Fischer <ronaldf@eml.cc>
+  If a packet hits a pocket on a socket on a port, 
+  and the bus is interrupted and the interrupt's not caught,
+  then the socket packet pocket has an error to report.
+		(cited after Peter van der Linden)


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RE: Mapping "underline" to "colour" - how is the colour determined?

[Buchbinder, Barry (NIH/NIAID) [E]]

Ronald Fischer sent the following at Friday, October 14, 2011 9:18 AM
>When I (to give an example) execute a "man" command within a mintty
>window, and do the same within a "normal" Windows console window, I see
>that those words represented as underlined words in the mintty window,
>are represented by a different colour in the Windows console windows.
>
>I guess this different has nothing to do with the "man" command, but
>by the way the terminal definition says how render "emphasized" words.
>Since the Windows console (likely) can't underline, colouring is used.
>It's kind of a "terminal property". Do I understand this correctly?
>
>I would like to understand, where this mapping to a certain colour is
>done. Reason is that the colour used for my Windows console window, is
>a bit hard to read and I would like to change it.

I don't know, but ...

Looking at the output of man, it seems that man formats with backspace
("<^H>"), e.g., bold X is X<^H>X and underlined Y is _<^H>Y.

Looking at /etc/defaults/etc/man.conf suggests to me that TROFF or
NROFF might be involved.  Reading the manual page for man.conf is even
more suggestive.

$ man -S 5 man.conf

Assuming that the above is useful, where one goes from there is left as
an exercise for someone else.

Good Luck,

- Barry
  Disclaimer: Statements made herein are not made on behalf of NIAID.

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Re: Mapping "underline" to "colour" - how is the colour determined?

[Andy Koppe]

On 14 October 2011 14:18, Ronald Fischer wrote:
> When I (to give an example) execute a "man" command within a mintty
> window, and do the same within a "normal" Windows console window, I see
> that those words represented as underlined words in the mintty
> window, are represented by a different colour in the Windows console
> windows.
>
> I guess this different has nothing to do with the "man" command, but by
> the way the terminal definition says how render "emphasized" words.
> Since the Windows console (likely) can't underline, colouring is used.
> It's kind of a "terminal property". Do I understand this correctly?

Yep.

> I would like to understand, where this mapping to a certain colour is
> done. Reason is that the colour used for my Windows console window, is a
> bit hard to read and I would like to change it.

It's hardcoded in the Cygwin DLL (in
winsup/cygwin/fhandler_console.cc), so you'd have to build that
yourself to change it.

Getting man/groff to use something other than the underline attribute
might be the better approach, but I don't know how to do that.

Andy

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Re: Mapping "underline" to "colour" - how is the colour determined?

[Robert Perlberg]

[-- Attachment #1: Type: text/plain, Size: 3474 bytes --]

On Oct 15, 2011, at 4:19 AM, Andy Koppe wrote:

> On 14 October 2011 14:18, Ronald Fischer wrote:
>> When I (to give an example) execute a "man" command within a mintty
>> window, and do the same within a "normal" Windows console window, I  
>> see
>> that those words represented as underlined words in the mintty
>> window, are represented by a different colour in the Windows console
>> windows.
>>
>> I guess this different has nothing to do with the "man" command,  
>> but by
>> the way the terminal definition says how render "emphasized" words.
>> Since the Windows console (likely) can't underline, colouring is  
>> used.
>> It's kind of a "terminal property". Do I understand this correctly?
>
> Yep.
>
>> I would like to understand, where this mapping to a certain colour is
>> done. Reason is that the colour used for my Windows console window,  
>> is a
>> bit hard to read and I would like to change it.
>
> It's hardcoded in the Cygwin DLL (in
> winsup/cygwin/fhandler_console.cc), so you'd have to build that
> yourself to change it.
>
> Getting man/groff to use something other than the underline attribute
> might be the better approach, but I don't know how to do that.
>
> Andy

The "Graphic Rendition" of the text is controlled by a facility called  
Terminfo.  Here's how you can change it.

First, do:

printenv TERM

This should display "cygwin" as the terminal type.  If not, replace  
"cygwin" in the following instructions with whatever terminal type you  
are using.

The terminfo files are stored under /usr/share/terminfo.  If you look  
there you will see several subdirectories with one and two-character  
names.  Each terminfo entry is stored in a subdirectory which  
corresponds to the ASCII value of its first character in hex, so the  
"cygwin" file is in the "63" directory.  You will also find a copy  
under the "c" directory, but that's not the one the system uses.  I  
presume that the one-character directories are for backwards  
compatibility.  Make a backup copy of the "cygwin" file so you can  
restore the original functionality in case you mess things up.

Now go create a new working directory somewhere, perhaps under your  
home directory.  In there, type:

infocmp cygwin >cygwin.txt

This will convert the binary terminfo file from /usr/share/terminfo/63  
into a text file you can examine and edit.  Edit the file with the  
text editor of your choice and locate the capabilities "smul" and  
"rmul".  "smul" specifies the escape sequence that will be used to  
introduce "underlined" characters, and "rmul" is the sequence that  
turns this mode off.  Set these values to whatever produces the effect  
you desire.  (More on this below.)

After editing the source file, type:

tic cygwin.txt

This "compiles" the source file back into the binary format and  
overwrites the original binary file in /usr/share/terminfo/63.  There  
are ways to redirect it to another directory, but I'll leave you to  
figure that out for yourself. (man tic)

Now run the man command and see if it produces the effect you want.

As for how to figure out what escape sequence to use, unpack the  
attached file "sgr_options,txt" and cat it in the desired terminal  
window.  Use "cat" rather than "less" or any other program that will  
filter the file contents.  This will show you the effects of the  
different options to the SGR (Set Graphic Rendition) escape sequence.   
For "rmul" just use "\E[0m" which turns off all modes.


[-- Attachment #2: sgr_options.txt --]
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\E[1m	^[[1mThe quick brown fox...^[[0m
\E[2m	^[[2mThe quick brown fox...^[[0m
\E[3m	^[[3mThe quick brown fox...^[[0m
\E[4m	^[[4mThe quick brown fox...^[[0m
\E[5m	^[[5mThe quick brown fox...^[[0m
\E[6m	^[[6mThe quick brown fox...^[[0m
\E[7m	^[[7mThe quick brown fox...^[[0m
\E[8m	^[[8mThe quick brown fox...^[[0m
\E[9m	^[[9mThe quick brown fox...^[[0m
\E[10m	^[[10mThe quick brown fox...^[[0m
\E[11m	^[[11mThe quick brown fox...^[[0m
\E[12m	^[[12mThe quick brown fox...^[[0m
\E[13m	^[[13mThe quick brown fox...^[[0m
\E[14m	^[[14mThe quick brown fox...^[[0m
\E[15m	^[[15mThe quick brown fox...^[[0m
\E[16m	^[[16mThe quick brown fox...^[[0m
\E[17m	^[[17mThe quick brown fox...^[[0m
\E[18m	^[[18mThe quick brown fox...^[[0m
\E[19m	^[[19mThe quick brown fox...^[[0m
\E[20m	^[[20mThe quick brown fox...^[[0m
\E[21m	^[[21mThe quick brown fox...^[[0m
\E[22m	^[[22mThe quick brown fox...^[[0m
\E[23m	^[[23mThe quick brown fox...^[[0m
\E[24m	^[[24mThe quick brown fox...^[[0m
\E[25m	^[[25mThe quick brown fox...^[[0m
\E[26m	^[[26mThe quick brown fox...^[[0m
\E[27m	^[[27mThe quick brown fox...^[[0m
\E[28m	^[[28mThe quick brown fox...^[[0m
\E[29m	^[[29mThe quick brown fox...^[[0m
\E[30m	^[[30mThe quick brown fox...^[[0m
\E[31m	^[[31mThe quick brown fox...^[[0m
\E[32m	^[[32mThe quick brown fox...^[[0m
\E[33m	^[[33mThe quick brown fox...^[[0m
\E[34m	^[[34mThe quick brown fox...^[[0m
\E[35m	^[[35mThe quick brown fox...^[[0m
\E[36m	^[[36mThe quick brown fox...^[[0m
\E[37m	^[[37mThe quick brown fox...^[[0m
\E[38m	^[[38mThe quick brown fox...^[[0m
\E[39m	^[[39mThe quick brown fox...^[[0m
\E[40m	^[[40mThe quick brown fox...^[[0m
\E[41m	^[[41mThe quick brown fox...^[[0m
\E[42m	^[[42mThe quick brown fox...^[[0m
\E[43m	^[[43mThe quick brown fox...^[[0m
\E[44m	^[[44mThe quick brown fox...^[[0m
\E[45m	^[[45mThe quick brown fox...^[[0m
\E[46m	^[[46mThe quick brown fox...^[[0m
\E[47m	^[[47mThe quick brown fox...^[[0m
\E[48m	^[[48mThe quick brown fox...^[[0m
\E[49m	^[[49mThe quick brown fox...^[[0m
\E[50m	^[[50mThe quick brown fox...^[[0m
\E[51m	^[[51mThe quick brown fox...^[[0m
\E[52m	^[[52mThe quick brown fox...^[[0m
\E[53m	^[[53mThe quick brown fox...^[[0m
\E[54m	^[[54mThe quick brown fox...^[[0m
\E[55m	^[[55mThe quick brown fox...^[[0m
\E[56m	^[[56mThe quick brown fox...^[[0m
\E[57m	^[[57mThe quick brown fox...^[[0m
\E[58m	^[[58mThe quick brown fox...^[[0m
\E[59m	^[[59mThe quick brown fox...^[[0m
\E[60m	^[[60mThe quick brown fox...^[[0m
\E[61m	^[[61mThe quick brown fox...^[[0m
\E[62m	^[[62mThe quick brown fox...^[[0m
\E[63m	^[[63mThe quick brown fox...^[[0m
\E[64m	^[[64mThe quick brown fox...^[[0m
\E[65m	^[[65mThe quick brown fox...^[[0m
\E[66m	^[[66mThe quick brown fox...^[[0m
\E[67m	^[[67mThe quick brown fox...^[[0m
\E[68m	^[[68mThe quick brown fox...^[[0m
\E[69m	^[[69mThe quick brown fox...^[[0m
\E[70m	^[[70mThe quick brown fox...^[[0m
\E[71m	^[[71mThe quick brown fox...^[[0m
\E[72m	^[[72mThe quick brown fox...^[[0m
\E[73m	^[[73mThe quick brown fox...^[[0m
\E[74m	^[[74mThe quick brown fox...^[[0m
\E[75m	^[[75mThe quick brown fox...^[[0m
\E[76m	^[[76mThe quick brown fox...^[[0m
\E[77m	^[[77mThe quick brown fox...^[[0m
\E[78m	^[[78mThe quick brown fox...^[[0m
\E[79m	^[[79mThe quick brown fox...^[[0m
\E[80m	^[[80mThe quick brown fox...^[[0m
\E[81m	^[[81mThe quick brown fox...^[[0m
\E[82m	^[[82mThe quick brown fox...^[[0m
\E[83m	^[[83mThe quick brown fox...^[[0m
\E[84m	^[[84mThe quick brown fox...^[[0m
\E[85m	^[[85mThe quick brown fox...^[[0m
\E[86m	^[[86mThe quick brown fox...^[[0m
\E[87m	^[[87mThe quick brown fox...^[[0m
\E[88m	^[[88mThe quick brown fox...^[[0m
\E[89m	^[[89mThe quick brown fox...^[[0m
\E[90m	^[[90mThe quick brown fox...^[[0m
\E[91m	^[[91mThe quick brown fox...^[[0m
\E[92m	^[[92mThe quick brown fox...^[[0m
\E[93m	^[[93mThe quick brown fox...^[[0m
\E[94m	^[[94mThe quick brown fox...^[[0m
\E[95m	^[[95mThe quick brown fox...^[[0m
\E[96m	^[[96mThe quick brown fox...^[[0m
\E[97m	^[[97mThe quick brown fox...^[[0m
\E[98m	^[[98mThe quick brown fox...^[[0m
\E[99m	^[[99mThe quick brown fox...^[[0m

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Re: Mapping "underline" to "colour" - how is the colour determined?

[Marco Atzeri]

On 10/24/2011 10:12 AM, Ronald Fischer wrote:
>>>> infocmp cygwin>cygwin.txt
>>>
>>> Which package do I need to have infocmp installed? According to Setup, I
>>> have terminfo 5.7 installed. However, infocmp is not in my PATH, not is
>>> there a man page for it.
>>>
>
>> http://cygwin.com/cgi-bin2/package-grep.cgi?grep=infocmp
>
>> Regards
>> Marco
>
> Hmm... Using this link, I get a search result of the following packages:
>
> =========================================================
>   Found 5 matches for infocmp
>
> 	ncurses/ncurses-5.7-16  Utilities for terminal handling
> 	ncurses/ncurses-5.7-18  Utilities for terminal handling
> 	ncursesw/ncursesw-5.7-18        Utilities for terminal handling
> 	tetex-bin/tetex-bin-2.0.2-15-src        The TeX text formatting
> 	system (binaries).
> 	tetex-bin/tetex-bin-3.0.0-3-src The TeX text formatting system
> 	(binaries).
> =========================================================
>
> Nothing which looks like infocmp....
>
> Ronald

have you tried to enter in ncurses/ncurses-5.7-18 ?

the search provide all the packages that match infocmp in the file list.

Regards
Marco

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Re: Mapping "underline" to "colour" - how is the colour determined?

[Ronald Fischer]

>>> infocmp cygwin>cygwin.txt
>>
>> Which package do I need to have infocmp installed? According to Setup, I
>> have terminfo 5.7 installed. However, infocmp is not in my PATH, not is
>> there a man page for it.
>>

>http://cygwin.com/cgi-bin2/package-grep.cgi?grep=infocmp

>Regards
>Marco

Hmm... Using this link, I get a search result of the following packages:

=========================================================
 Found 5 matches for infocmp

	ncurses/ncurses-5.7-16  Utilities for terminal handling
	ncurses/ncurses-5.7-18  Utilities for terminal handling
	ncursesw/ncursesw-5.7-18        Utilities for terminal handling
	tetex-bin/tetex-bin-2.0.2-15-src        The TeX text formatting
	system (binaries).
	tetex-bin/tetex-bin-3.0.0-3-src The TeX text formatting system
	(binaries).
=========================================================

Nothing which looks like infocmp....

Ronald
-- 
Ronald Fischer <ronaldf@eml.cc>
+  If a packet hits a pocket on a socket on a port, 
+  and the bus is interrupted and the interrupt's not caught,
+  then the socket packet pocket has an error to report.
+		(cited after Peter van der Linden)


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Re: Mapping "underline" to "colour" - how is the colour determined?

[Marco Atzeri]

On 10/20/2011 4:37 PM, Ronald Fischer wrote:
> Thanks a lot for the detailed instructions!
>
>> Now go create a new working directory somewhere, perhaps under your
>> home directory.  In there, type:
>
>> infocmp cygwin>cygwin.txt
>
> Which package do I need to have infocmp installed? According to Setup, I
> have terminfo 5.7 installed. However, infocmp is not in my PATH, not is
> there a man page for it.
>
> Regards,
>
> Ronald
>
>

http://cygwin.com/cgi-bin2/package-grep.cgi?grep=infocmp

Regards
Marco


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Re: Mapping "underline" to "colour" - how is the colour determined?

[Ronald Fischer]

Thanks a lot for the detailed instructions!

> Now go create a new working directory somewhere, perhaps under your  
> home directory.  In there, type:

> infocmp cygwin >cygwin.txt

Which package do I need to have infocmp installed? According to Setup, I
have terminfo 5.7 installed. However, infocmp is not in my PATH, not is
there a man page for it. 

Regards,

Ronald


-- 
Ronald Fischer <ronaldf@eml.cc>
+  If a packet hits a pocket on a socket on a port, 
+  and the bus is interrupted and the interrupt's not caught,
+  then the socket packet pocket has an error to report.
+		(cited after Peter van der Linden)


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