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Diffstat (limited to 'Doc/Zsh/expn.yo')
| -rw-r--r-- | Doc/Zsh/expn.yo | 13 |
1 files changed, 13 insertions, 0 deletions
diff --git a/Doc/Zsh/expn.yo b/Doc/Zsh/expn.yo index 7d4e6fccb..1e1fc522f 100644 --- a/Doc/Zsh/expn.yo +++ b/Doc/Zsh/expn.yo @@ -319,6 +319,19 @@ forms of expansion. Note that if a `tt(&)' is used within glob qualifiers an extra backslash is needed as a tt(&) is a special character in this case. +Also note that the order of expansions affects the interpretation of +var(l) and var(r). When used in a history expansion, which occurs before +any other expansions, var(l) and var(r) are treated as literal strings +(except as explained for tt(HIST_SUBST_PATTERN) below). When used in +parameter expansion, the replacement of var(r) into the parameter's value +is done first, and then any additional process, parameter, command, +arithmetic, or brace references are applied, which may evaluate those +substitutions and expansions more than once if var(l) appears more than +once in the starting value. When used in a glob qualifier, any +substitutions or expansions are performed once at the time the qualifier +is parsed, even before the `tt(:s)' expression itself is divided into +var(l) and var(r) sides. + If the option tt(HIST_SUBST_PATTERN) is set, var(l) is treated as a pattern of the usual form described in ifzman(the section FILENAME GENERATION below)\ |