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Diffstat (limited to 'Doc/Zsh/expn.yo')
| -rw-r--r-- | Doc/Zsh/expn.yo | 10 |
1 files changed, 10 insertions, 0 deletions
diff --git a/Doc/Zsh/expn.yo b/Doc/Zsh/expn.yo index 172949176..bac3c2094 100644 --- a/Doc/Zsh/expn.yo +++ b/Doc/Zsh/expn.yo @@ -1309,6 +1309,16 @@ are useful for matching path segments in patterns. For example, `tt(*((#s)|/)test((#e)|/)*)' matches a path segment `tt(test)' in any of the following strings: tt(test), tt(test/at/start), tt(at/end/test), tt(in/test/middle). + +Another use is in parameter substitution; for example +`tt(${array/(#s)A*Z(#e)})' will remove only elements of an array which +match the complete pattern `tt(A*Z)'. There are other ways of performing +many operations of this type, however the combination of the substitution +operations `tt(/)' and `tt(//)' with the `tt((#s))' and `tt((#e))' flags +provides a single simple and memorable method. + +Note that assertions of the form `tt((^(#s)))' also work, i.e. match +anywhere except at the start of the string. ) enditem() |