Re: [TUHS] Seeking wisdom from Unix Greybeards

[Steffen Nurpmeso <steffen@sdaoden.eu>]

Grant Taylor wrote in
 <9c1595cc-54a1-8af9-0c2d-083cb04dd97c@spamtrap.tnetconsulting.net>:
 |Hi,
 |
 |As I find myself starting yet another project that that wants to use 
 |ANSI control sequences for colorization of text, I find myself -- yet 
 |again -- wondering if there is a better way to generate the output from 
 |the code in a way that respects TERMinal capabilites.
 |
 |Is there a better / different control sequence that I can ~> should use 
 |for colorizing / stylizing output that will account for the differences 
 |in capabilities between a VT100 and XTerm?
 |
 |Can I wrap things that I output so that I don't send color control 
 |sequences to a TERMinal that doesn't support them?

  color_init() {
     [ -n "${NOCOLOUR}" ] && return
     [ -n "${MAILX_CC_TEST_NO_COLOUR}" ] && return
     # We do not want color for "make test > .LOG"!
     if (command -v stty && command -v tput) >/dev/null 2>&1 &&
           (<&1 >/dev/null stty -a) 2>/dev/null; then
        { sgr0=`tput sgr0`; } 2>/dev/null
        [ $? -eq 0 ] || return
        { saf1=`tput setaf 1`; } 2>/dev/null
        [ $? -eq 0 ] || return
        { saf2=`tput setaf 2`; } 2>/dev/null
        [ $? -eq 0 ] || return
        { saf3=`tput setaf 3`; } 2>/dev/null
        [ $? -eq 0 ] || return
        { b=`tput bold`; } 2>/dev/null
        [ $? -eq 0 ] || return

        COLOR_ERR_ON=${saf1}${b} COLOR_ERR_OFF=${sgr0}
        COLOR_WARN_ON=${saf3}${b} COLOR_WARN_OFF=${sgr0}
        COLOR_OK_ON=${saf2} COLOR_OK_OFF=${sgr0}
        unset saf1 saf2 saf3 b
     fi
  }

Is what i use for a make system.

--steffen
|
|Der Kragenbaer,                The moon bear,
|der holt sich munter           he cheerfully and one by one
|einen nach dem anderen runter  wa.ks himself off
|(By Robert Gernhardt)