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Diffstat (limited to 'Doc/Zsh/mod_system.yo')
| -rw-r--r-- | Doc/Zsh/mod_system.yo | 10 |
1 files changed, 10 insertions, 0 deletions
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) |