diff options
Diffstat (limited to 'Doc/Zsh/expn.yo')
| -rw-r--r-- | Doc/Zsh/expn.yo | 20 |
1 files changed, 12 insertions, 8 deletions
diff --git a/Doc/Zsh/expn.yo b/Doc/Zsh/expn.yo index e49fa06cb..d7376de62 100644 --- a/Doc/Zsh/expn.yo +++ b/Doc/Zsh/expn.yo @@ -556,11 +556,15 @@ possible to perform nested operations: tt(${${foo#head}%tail}) substitutes the value of tt($foo) with both `tt(head)' and `tt(tail)' deleted. The form with tt($LPAR())...tt(RPAR()) is often useful in combination with the flags described next; see the examples below. +Each var(name) or nested tt(${)...tt(}) in a parameter expansion may +also be followed by a subscript expression as described in +ifzman(em(Array Parameters) in zmanref(zshparam))\ +ifnzman(noderef(Array Parameters)). -Note that double quotes may appear around nested substitutions, in which +Note that double quotes may appear around nested expressions, in which case only the part inside is treated as quoted; for example, tt(${(f)"$(foo)"}) quotes the result of tt($(foo)), but the flag `tt((f))' -(see below) is applied using the rules for unquoted substitutions. Note +(see below) is applied using the rules for unquoted expansions. Note further that quotes are themselves nested in this context; for example, in tt("${(@f)"$(foo)"}"), there are two sets of quotes, one surrounding the whole expression, the other (redundant) surrounding the tt($(foo)) as @@ -579,19 +583,19 @@ in place of the colon as delimiters. The following flags are supported: startitem() item(tt(A))( -Create an array parameter with tt(${)...tt(=)...tt(}), -tt(${)...tt(:=)...tt(}) or tt(${)...tt(::=)...tt(}). -If this flag is repeated (as in tt(AA)), create an associative +Create an array parameter with `tt(${)...tt(=)...tt(})', +`tt(${)...tt(:=)...tt(})' or `tt(${)...tt(::=)...tt(})'. +If this flag is repeated (as in `tt(AA)'), create an associative array parameter. Assignment is made before sorting or padding. The var(name) part may be a subscripted range for ordinary arrays; the var(word) part em(must) be converted to an array, for -example by using tt(${(AA)=)var(name)tt(=)...tt(}) to activate word +example by using `tt(${(AA)=)var(name)tt(=)...tt(})' to activate word splitting, when creating an associative array. ) item(tt(@))( In double quotes, array elements are put into separate words. -E.g., tt("${(@)foo}") is equivalent to tt("${foo[@]}") and -tt("${(@)foo[1,2]}") is the same as tt("$foo[1]" "$foo[2]"). +E.g., `tt("${(@)foo}")' is equivalent to `tt("${foo[@]}")' and +`tt("${(@)foo[1,2]}")' is the same as `tt("$foo[1]" "$foo[2]")'. ) item(tt(e))( Perform em(parameter expansion), em(command substitution) and |