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FAQ update

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Peter Stephenson 2010-03-19 21:11:15 +00:00
parent 5e629a4565
commit 7dd4c69371
2 changed files with 36 additions and 13 deletions
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ChangeLog
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@ -1,3 +1,8 @@
2010-03-19 Peter Stephenson <p.w.stephenson@ntlworld.com>
* unposted: Etc/FAQ.yo: update section on coloured prompts and
some other minor bits.
2010-03-19 Peter Stephenson <pws@csr.com>
* unposted: Functions/Calendar/calendar: update previous
@ -12938,5 +12943,5 @@
*****************************************************
* This is used by the shell to define $ZSH_PATCHLEVEL
* $Revision: 1.4939 $
* $Revision: 1.4940 $
*****************************************************

42
Etc/FAQ.yo
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@ -588,10 +588,11 @@ tt(EXTENDED_GLOB).
occurred somewhere in the path (e.g. mytt(users/barstaff/foo) will
be excluded by the mytt(~) operator). As the mytt(**) operator cannot
be grouped (inside parentheses it is treated as mytt(*)), this is
the way to exclude some subdirectories from matching a mytt(**).
one way to exclude some subdirectories from matching a mytt(**).
The form (^foo/)# also works.
it() Unquoted assignments do file expansion after mytt(:)s (intended for
PATHs).
it() mytt(typeset) and mytt(integer) have special behaviour for
it()* mytt(typeset) and mytt(integer) have special behaviour for
assignments in ksh, but not in zsh. For example, this doesn't
work in zsh:
verb(
@ -605,7 +606,7 @@ tt(EXTENDED_GLOB).
itemize(
it()* There is no tt($ENV) variable (use tt(/etc/zshrc), tt(~/.zshrc);
note also tt($ZDOTDIR)).
it() tt($PATH) is not searched for commands specified
it()* tt($PATH) is not searched for commands specified
at invocation without -c.
)
it() Aliases and functions:
@ -1738,14 +1739,31 @@ sect(What's wrong with cut and paste on my xterm?)
sect(How do I get coloured prompts on my colour xterm?)
(Or `color xterm', if you're reading this in black and white.) You need
to find the sequences which generate the various colours from the manual
for your terminal emulator; these are ANSI standard on those I know about
which support colour. With a recent (post 3.1.6) distribution of zsh,
there is a theme system to handle this for you; even if you don't see that,
the installed function `mytt(colors)' (meaning `colours', if you're not
reading this in black and white) gives the escape sequences. You will end
up with code looking like this (borrowed from Oliver Kiddle):
(Or `color xterm', if you're reading this in black and white.)
Versions of the shell starting with the 4.3 series have this
built in. Use
verb(
PS1='%K{white}%F{red}<red on white>%f%k<default colours>'
)
to change the prompt. Names are only usable for the colours
black, red, green, yellow, blue, magenta, cyan and white, understood
by most terminals, but if you happen to know the details of how
your terminal implements colours you can specify a number, e.g.
mytt(%20F) to turn the foreground into colour number 20. mytt(echotc
Co) will often output the number of colours the terminal supports.
(Careful: mytt(echotc co) is different; it also outputs a number
but it's the number of columns in the terminal.) If this is 8
then probably you have the named colours and nothing more.
In older versions of the shell you need to find the sequences which
generate the various colours from the manual for your terminal
emulator; these are ANSI standard on those I know about which support
colour. With a recent (post 3.1.6) distribution of zsh, there is a
theme system to handle this for you; even if you don't see that, the
installed function `mytt(colors)' (meaning `colours', if you're not
reading this in black and white) gives the escape sequences. You will
end up with code looking like this (borrowed from Oliver Kiddle):
verb(
PS1=$'%{\e[1;31m%}<the rest of your prompt here>%{\e[0m%}'
)
@ -2002,7 +2020,7 @@ sect(What is multibyte input?)
just needs to ask the system library how many octets form the next
character, and if there's a valid character there at all. (It can also
ask the system what width the character takes up on the screen, so that
characters no longer need to be exacxtly one position wide.)
characters no longer need to be exactly one position wide.)
The way this is done is called UTF-8. Multibyte encodings of other
character sets exist (you might encounter them for Asian character sets);