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Diffstat (limited to 'Doc/Zsh/cond.yo')
| -rw-r--r-- | Doc/Zsh/cond.yo | 25 |
1 files changed, 25 insertions, 0 deletions
diff --git a/Doc/Zsh/cond.yo b/Doc/Zsh/cond.yo index 0ff49b187..b24ebebc8 100644 --- a/Doc/Zsh/cond.yo +++ b/Doc/Zsh/cond.yo @@ -149,6 +149,20 @@ true if either var(exp1) or var(exp2) is true. ) enditem() +Normal shell expansion is performed on the var(file), var(string) and +var(pattern) arguments, but the result of each expansion is constrained to +be a single word, similar to the effect of double quotes. However, pattern +metacharacters are active for the var(pattern) arguments; the patterns +are the same as those used for filename generation, see +ifzman(\ +zmanref(zshexpn) +)\ +ifnzman(\ +noderef(Filename Generation) +)\ +, but there is no special behaviour +of `tt(/)' nor initial dots, and no glob qualifiers are allowed. + In each of the above expressions, if var(file) is of the form `tt(/dev/fd/)var(n)', where var(n) is an integer, @@ -156,3 +170,14 @@ then the test applied to the open file whose descriptor number is var(n), even if the underlying system does not support the tt(/dev/fd) directory. + +In the forms which do numeric comparison, the expressions var(exp) +undergo arithmetic expansion as if they were enclosed in tt($((...))). + +For example, the following: + +example([[ ( -f foo || -f bar ) && $report = y* ]] && print File exists.) + +tests if either file tt(foo) or file tt(bar) exists, and if so, if the +value of the parameter tt(report) begins with `tt(y)'; if the complete +condition is true, the message `tt(File exists.)' is printed. |