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Diffstat (limited to 'Doc/Zsh/expn.yo')
| -rw-r--r-- | Doc/Zsh/expn.yo | 12 |
1 files changed, 12 insertions, 0 deletions
diff --git a/Doc/Zsh/expn.yo b/Doc/Zsh/expn.yo index ef01794e6..19f5909ea 100644 --- a/Doc/Zsh/expn.yo +++ b/Doc/Zsh/expn.yo @@ -604,6 +604,16 @@ and other operators, such as `tt(${PREFIX:-"/usr/local"})'. Parameter expansions can also be nested. These topics will be introduced below. The full rules are complicated and are noted at the end. +cindex(namespace) +Parameter expansions may optionally include a em(namespace) prefix in +the format `tt(.)var(identifier)tt(.)' This currently has no special +meaning to the shell, but provides a convenient means of grouping +related parameters. Expansions using a namespace em(must) include +braces (tt({) and tt(})) as shown in the descriptions below, and +only one namespace prefix is allowed. Note that, for support of +possible future features, the first `tt(.)' is optional, but omitting +it is discouraged. + In the expansions discussed below that require a pattern, the form of the pattern is the same as that used for filename generation; see noderef(Filename Generation). Note that these patterns, along with @@ -616,6 +626,8 @@ substitution on the expansion of parameter tt($i). In the following descriptions, `var(word)' refers to a single word substituted on the command line, not necessarily a space delimited word. +The reference to `var(name)' in each description presumes any optional +namespace prefix. startitem() item(tt(${)var(name)tt(}))( |