diff options
Diffstat (limited to 'Doc/Zsh')
| -rw-r--r-- | Doc/Zsh/options.yo | 25 | ||||
| -rw-r--r-- | Doc/Zsh/params.yo | 8 |
2 files changed, 29 insertions, 4 deletions
diff --git a/Doc/Zsh/options.yo b/Doc/Zsh/options.yo index f7e11d20f..349946d82 100644 --- a/Doc/Zsh/options.yo +++ b/Doc/Zsh/options.yo @@ -1608,7 +1608,10 @@ pindex(NOFUNCTIONARGZERO) cindex($0, setting) item(tt(FUNCTION_ARGZERO) <C> <Z>)( When executing a shell function or sourcing a script, set tt($0) -temporarily to the name of the function/script. +temporarily to the name of the function/script. Note that toggling +tt(FUNCTION_ARGZERO) from on to off (or off to on) does not change the +current value of tt($0). Only the state upon entry to the function or +script has an effect. Compare tt(POSIX_ARGZERO). ) pindex(LOCAL_OPTIONS) pindex(NO_LOCAL_OPTIONS) @@ -1945,6 +1948,26 @@ as one unit, so aliases defined within the argument are not available even in later lines. If in doubt, avoid use of aliases in non-interactive code. ) +pindex(POSIX_ARGZERO) +pindex(NO_POSIX_ARGZERO) +pindex(POSIXARGZERO) +pindex(NOPOSIXARGZERO) +cindex($0, using) +item(tt(POSIX_ARGZERO))( +This option may be used to temporarily disable tt(FUNCTION_ARGZERO) and +thereby restore the value of tt($0) to the name used to invoke the shell +(or as set by the tt(-c) command line option). For compatibility with +previous versions of the shell, emulations use tt(NO_FUNCTION_ARGZERO) +instead of tt(POSIX_ARGZERO), which may result in unexpected scoping of +tt($0) if the emulation mode is changed inside a function or script. +To avoid this, explicitly enable tt(POSIX_ARGZERO) in the tt(emulate) +command: + +example(emulate sh -o POSIX_ARGZERO) + +Note that tt(NO_POSIX_ARGZERO) has no effect unless tt(FUNCTION_ARGZERO) +was already enabled upon entry to the function or script. +) pindex(POSIX_BUILTINS) pindex(NO_POSIX_BUILTINS) pindex(POSIXBUILTINS) diff --git a/Doc/Zsh/params.yo b/Doc/Zsh/params.yo index c1cb9739d..5bccdc2d0 100644 --- a/Doc/Zsh/params.yo +++ b/Doc/Zsh/params.yo @@ -541,9 +541,11 @@ The exit status returned by the last command. ) vindex(0) item(tt(0) <S>)( -The name used to invoke the current shell. If the tt(FUNCTION_ARGZERO) option -is set, this is set temporarily within a shell function to the name of the -function, and within a sourced script to the name of the script. +The name used to invoke the current shell, or as set by the tt(-c) command +line option upon invocation. If the tt(FUNCTION_ARGZERO) option is set, +tt($0) is set upon entry to a shell function to the name of the function, +and upon entry to a sourced script to the name of the script, and reset to +its previous value when the function or script returns. ) vindex(status) item(tt(status) <S> <Z>)( |