Re: Where"s Glynn( and a Linux question) ?

lists@lastisfirst.com wrote:

> > I can't be sure without seeing the actual codes, but my first guess
> > would be that it is attempting to use ANSI colour sequences but the
> > pager (e.g. less) is displaying a printable representation.
>
> Glynn --
> Your guess about ansi color is correct, that's how Patrick V set it up by
> defualt. He also has less set in /etc/profile to LESS="-M"?
>
> The "-r" option worke fine for me :-)

> Here' some out (with out the -r):

> ^[[1mNAME^[[0m
> man - format and display the on-line manual pages
> manpath - determine user's search path for man pages
>
> ^[[1mSYNOPSIS^[[0m
> ^[[1mman ^[[22m[^[[1m-acdfFhkKtwW^[[22m] [^[[1m--path^[[22m] [^[[1m-m
> ^[[4m^[[22msystem^[[24m] [^[[1m-p ^[[4m^[[22mstring^[[24m] [^[[1m-C
> ^[[4m^[[22mconfig_file^[[24m]
> [^[[1m-M ^[[4m^[[22mpathlist^[[24m] [^[[1m-P ^[[4m^[[22mpager^[[24m] [^[[1m-S
> ^[[4m^[[22msection_list^[[24m] [^[[4msection^[[24m] ^[[4mname^[[24m ^[[4m...^[[0m
>
>
> ^[[1mDESCRIPTION^[[0m
> ^[[1mman ^[[22mformats and displays the on-line manual pages. If you
> specify ^[[4msec-^[[0m
> ^[[4mtion^[[24m, ^[[1mman ^[[22monly looks in that section of the manual.
> ^[[4mname^[[24m is normally
> the name of the manual page, which is typically the name of a command,
> function, or file. However, if ^[[4mname^[[24m contains a slash
> (^[[1m/^[[22m)

OK; those *aren't* ANSI colour sequences, but the xterm bold and
underline sequences:

^[[4m smul begin underlining
^[[24m rmul end underlining
^[[1m bold begin bold
^[[22m - end bold

ANSI colour sequences are ^[[3x (foreground) and ^[[4x (background),
where x is the colour number, often combined (i.e. ^[[3x;4x).

My version of groff (1.15) uses overstrike (i.e. backspace) for bold
and underline; bold would be:

h^Hhe^Hel^Hll^Hlo^Ho

and underline would be:

_^Hh_^He_^Hl_^Hl_^Ho

less interprets those sequences automatically, generating the
appropriate escape sequences.

--
Glynn Clements
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