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Diffstat (limited to 'Doc')
| -rw-r--r-- | Doc/Zsh/builtins.yo | 122 |
1 files changed, 75 insertions, 47 deletions
diff --git a/Doc/Zsh/builtins.yo b/Doc/Zsh/builtins.yo index f3bcc3564..de5700d2f 100644 --- a/Doc/Zsh/builtins.yo +++ b/Doc/Zsh/builtins.yo @@ -1708,59 +1708,87 @@ newly-created parameters, or when any attribute flags listed below are given along with the var(name). Using `tt(PLUS())' instead of minus to introduce an attribute turns it off. -If the tt(-p) option is given, parameters and values are printed in the -form of a typeset command and an assignment (which will be printed -separately for arrays and associative arrays), regardless of other flags -and options. Note that the tt(-h) flag on parameters is respected; no -value will be shown for these parameters. - -If the tt(-T) option is given, two or three arguments must be present (an -exception is that zero arguments are allowed to show the list of parameters -created in this fashion). The first two are the name of a scalar and an -array parameter (in that order) that will be tied together in the manner of -tt($PATH) and tt($path). The optional third argument is a single-character -separator which will be used to join the elements of the array to form the -scalar; if absent, a colon is used, as with tt($PATH). Only the first -character of the separator is significant; any remaining characters are -ignored. Only the scalar parameter may be assigned an initial value. Both -the scalar and the array may otherwise be manipulated as normal. If one is -unset, the other will automatically be unset too. There is no way of -untying the variables without unsetting them, or converting the type of one -of them with another tt(typeset) command; tt(+T) does not work, assigning -an array to var(SCALAR) is an error, and assigning a scalar to var(array) -sets it to be a single-element array. Note that both `tt(typeset -xT ...)' -and `tt(export -T ...)' work, but only the scalar will be marked for -export. Setting the value using the scalar version causes a split on all -separators (which cannot be quoted). It is possible to use the -same two tied variables with a different separator character in which -case the variables remain joined as before but the separator is changed. -This flag has a different meaning when used with tt(-f); see below. - -The tt(-g) (global) flag is treated specially: it means that any -resulting parameter will not be restricted to local scope. Note that this -does not necessarily mean that the parameter will be global, as the flag -will apply to any existing parameter (even if unset) from an enclosing -function. This flag does not affect the parameter after creation, hence it -has no effect when listing existing parameters, nor does the flag tt(+g) -have any effect except in combination with tt(-m) (see below). - If no var(name) is present, the names and values of all parameters are printed. In this case the attribute flags restrict the display to only those parameters that have the specified attributes, and using `tt(PLUS())' rather than `tt(-)' to introduce the flag suppresses printing of the values -of parameters when there is no parameter name. Also, if the last option -is the word `tt(PLUS())', then names are printed but values are not. +of parameters when there is no parameter name. + +The following control flags change the behavior of tt(typeset): +startitem() +item(tt(PLUS()))( +If `tt(PLUS())' appears by itself in a separate word as the last option, +then the names of all parameters (functions with tt(-f)) are printed, but +the values (function bodies) are not. No var(name) arguments may appear, +and it is an error for any other options to follow `tt(PLUS())'. The +effect of `tt(PLUS())' is as if all attribute flags which precede it were +given with a `tt(PLUS())' prefix. For example, `tt(typeset -U PLUS())' is +equivalent to `tt(typeset +U)' and displays the names of all arrays having +the uniqueness attribute, whereas `tt(typeset -f -U PLUS())' displays the +names of all autoloadable functions. If tt(PLUS()) is the only option, +then type information (array, readonly, etc.) is also printed for each +parameter. +) +item(tt(-g))( +The tt(-g) (global) means that any resulting parameter will not be +restricted to local scope. Note that this does not necessarily mean that +the parameter will be global, as the flag will apply to any existing +parameter (even if unset) from an enclosing function. This flag does not +affect the parameter after creation, hence it has no effect when listing +existing parameters, nor does the flag tt(+g) have any effect except in +combination with tt(-m) (see below). +) +item(tt(-m))( If the tt(-m) flag is given the var(name) arguments are taken as patterns -(which should be quoted). With no attribute flags, all parameters (or -functions with the tt(-f) flag) with matching names are printed (the shell -option tt(TYPESET_SILENT) is not used in this case). Note that tt(-m) is -ignored if no patterns are given. If the tt(+g) flag is combined with -tt(-m), a new local parameter is created for every matching parameter that -is not already local. Otherwise tt(-m) applies all other flags or -assignments to the existing parameters. Except when assignments are made -with var(name)tt(=)var(value), using tt(+m) forces the matching parameters -to be printed, even inside a function. +(use quoting to prevent these from being interpreted as file patterns). +With no attribute flags, all parameters (or functions with the tt(-f) +flag) with matching names are printed (the shell option tt(TYPESET_SILENT) +is not used in this case). + +If the tt(+g) flag is combined with tt(-m), a new local parameter is +created for every matching parameter that is not already local. Otherwise +tt(-m) applies all other flags or assignments to the existing parameters. + +Except when assignments are made with var(name)tt(=)var(value), using +tt(+m) forces the matching parameters to be printed, even inside a +function. Note that tt(-m) is ignored if no patterns are given. +) +item(tt(-p))( +If the tt(-p) option is given, parameters and values are printed in the +form of a typeset command and an assignment (which will be printed +separately for arrays and associative arrays), regardless of other flags +and options. Note that the tt(-H) flag on parameters is respected; no +value will be shown for these parameters. +) +item(tt(-T) [ var(scalar)[tt(=)var(value)] var(array) [ var(sep) ] ])( +This flag has a different meaning when used with tt(-f); see below. +Otherwise the tt(-T) option requires zero, two, or three arguments to be +present. With no arguments, the list of parameters created in this +fashion is shown. With two or three arguments, the first two are the name +of a scalar and of an array parameter (in that order) that will be tied +together in the manner of tt($PATH) and tt($path). The optional third +argument is a single-character separator which will be used to join the +elements of the array to form the scalar; if absent, a colon is used, as +with tt($PATH). Only the first character of the separator is significant; +any remaining characters are ignored. + +Only the scalar parameter may be assigned an initial value. Both the +scalar and the array may otherwise be manipulated as normal. If one is +unset, the other will automatically be unset too. There is no way of +untying the variables without unsetting them, nor of converting the type +of one of them with another tt(typeset) command; tt(+T) does not work, +assigning an array to var(scalar) is an error, and assigning a scalar to +var(array) sets it to be a single-element array. + +Note that both `tt(typeset -xT ...)' and `tt(export -T ...)' work, but +only the scalar will be marked for export. Setting the value using the +scalar version causes a split on all separators (which cannot be quoted). +It is possible to apply tt(-T) to two previously tied variables but with a +different separator character, in which case the variables remain joined +as before but the separator is changed. +) +enditem() If no attribute flags are given and either no tt(-m) flag is present or the tt(+m) form was used, each parameter name printed is preceded by a |