diff options
Diffstat (limited to 'Doc/Zsh/expn.yo')
| -rw-r--r-- | Doc/Zsh/expn.yo | 13 |
1 files changed, 7 insertions, 6 deletions
diff --git a/Doc/Zsh/expn.yo b/Doc/Zsh/expn.yo index 0e121e784..7eade4a11 100644 --- a/Doc/Zsh/expn.yo +++ b/Doc/Zsh/expn.yo @@ -1937,13 +1937,14 @@ split on tt(IFS) unless the tt(SH_WORD_SPLIT) option is set. cindex(substitution, command, current shell) cindex(substitution, command, non forking) cindex(substitution, nofork) -Substitutions of the form `tt(${|)var(param)tt(|)...tt(})' are similar, +Substitutions of the form `tt(${{)var(param)tt(}) ...tt(})' are similar, except that the substitution is replaced by the value of the parameter named by var(param). No implicit save or restore applies to var(param) -except as noted for tt(REPLY), and var(param) should em(not) be declared -within the command. If, after evaluating the expression, var(param) -names an array, array expansion rules apply. However, tt(REPLY) is -always expanded in scalar context, even if assigned an array. +and var(param) should em(not) be declared within the command. No space +is allowed within `tt(${{)' and space or newline is required after +`tt({)var(param)tt(})'. The var(param) may include a subscript, and if, +after evaluating the expression, var(param) names an array, then array +expansion rules apply to the final substitution. A command enclosed in braces preceded by a dollar sign, and set off from the braces by whitespace, like `tt(${ )...tt( })', is replaced by its @@ -1954,7 +1955,7 @@ Word splitting does not apply unless tt(SH_WORD_SPLIT) is set, but a single trailing newline is stripped unless the substitution is enclosed in double quotes. -Note that because the `tt(${|)...tt(})' and `tt(${ )...tt( })' forms +Note that because `tt(${|)...tt(})' and the two related substitutions must be parsed at once as both string tokens and commands, all other braces (`tt({)' or `tt(})') within the command either must be quoted, or must appear in syntactically valid pairs, such as around complex |