diff options
Diffstat (limited to 'Doc/Zsh/builtins.yo')
| -rw-r--r-- | Doc/Zsh/builtins.yo | 16 |
1 files changed, 10 insertions, 6 deletions
diff --git a/Doc/Zsh/builtins.yo b/Doc/Zsh/builtins.yo index 97a82226b..92917c06c 100644 --- a/Doc/Zsh/builtins.yo +++ b/Doc/Zsh/builtins.yo @@ -2041,12 +2041,13 @@ cindex(named reference) cindex(reference, named) The flag tt(-n) creates a em(named reference) to another parameter. The second parameter need not exist at the time the reference is -created. No attributes except tt(-g) may be used in conjunction with +created. Only tt(-g) and tt(-r) may be used in conjunction with tt(-n). The var(name) so created may not be an array element nor use a subscript, but the var(value) assigned may be any valid parameter name syntax, even a subscripted array element (including an associative array element) or an array slice, which is evaluated when the named -reference is expanded. +reference is expanded. It is an error for a named reference to refer +to itself, even indirectly through a chain of references. See ifzman(zmanref(zshexpn))ifnzman(noderef(Parameter Expansion)) and ifzman(zmanref(zshparam))ifnzman(noderef(Parameters)) for details of the behavior of named references. @@ -2443,7 +2444,7 @@ with the command `tt(zmodload -F zsh/rlimits b:unlimit)'. ) findex(unset) cindex(parameters, unsetting) -item(tt(unset) [ tt(-fmv) ] var(name) ...)( +item(tt(unset) [ tt(-fmv) ] [ tt(-n) ] var(name) ...)( Each named parameter is unset. Local parameters remain local even if unset; they appear unset within scope, but the previous value will still reappear when the scope ends. @@ -2457,10 +2458,13 @@ be quoted) and all parameters with matching names are unset. Note that this cannot be used when unsetting associative array elements, as the subscript will be treated as part of the pattern. -The tt(-v) flag specifies that var(name) refers to parameters. This is the -default behaviour. +The tt(-v) flag specifies that var(name) refers to parameters. This is +the default behaviour. If the tt(-n) option is supplied, and +var(name) is a a named reference, var(name) will be unset rather than +the variable it references. -tt(unset -f) is equivalent to tt(unfunction). +tt(unset -f) is equivalent to tt(unfunction). The tt(-n) option has +no effect with tt(-f). ) findex(unsetopt) cindex(options, unsetting) |