From a3b971a27ec7ba78e0a6b0a248c619b8cec53d98 Mon Sep 17 00:00:00 2001 From: Peter Stephenson Date: Thu, 25 Feb 2010 11:15:26 +0000 Subject: 27755: add "zsystem supports" to zsh/system --- Doc/Zsh/mod_system.yo | 10 ++++++++++ 1 file changed, 10 insertions(+) (limited to 'Doc/Zsh/mod_system.yo') diff --git a/Doc/Zsh/mod_system.yo b/Doc/Zsh/mod_system.yo index 29047bfe4..dce07175f 100644 --- a/Doc/Zsh/mod_system.yo +++ b/Doc/Zsh/mod_system.yo @@ -148,6 +148,16 @@ If the option tt(-r) is given, the lock is only for reading, otherwise it is for reading and writing. The file descriptor is opened accordingly. ) +item(tt(zsystem supports) var(subcommand))( +The builtin tt(zsystem)'s subcommand tt(supports) tests whether a +given subcommand is supported. It returns status 0 if so, else +status 1. It operates silently unless there was a syntax error +(i.e. the wrong number of arguments), in which case status 255 +is returned. Status 1 can indicate one of two things: var(subcommand) +is known but not supported by the current operating system, or +var(subcommand) is not known (possibly because this is an older +version of the shell before it was implemented). +) enditem() subsect(Parameters) -- cgit 1.4.1