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34657: document the effect of substring subscripting better

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Peter Stephenson 2015-03-06 09:50:01 +00:00
parent ec03a233c5
commit 00b3085b96
2 changed files with 16 additions and 1 deletions
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12
Doc/Zsh/params.yo
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@ -187,7 +187,17 @@ from the end of the array tt(foo), and
Subscripting may also be performed on non-array values, in which
case the subscripts specify a substring to be extracted.
For example, if tt(FOO) is set to `tt(foobar)', then
`tt(echo $FOO[2,5])' prints `tt(ooba)'.
`tt(echo $FOO[2,5])' prints `tt(ooba)'. Note that
some forms of subscripting described below perform pattern matching,
and in that case the substring extends from the start of the match
of the first subscript to the end of the match of the second
subscript. For example,
example(string="abcdefghijklm"
print ${string[+LPAR()r+RPAR()d?,+LPAR()r+RPAR()h?]})
prints `tt(defghi)'. This is an obvious generalisation of the
rule for single-character matches.
subsect(Array Element Assignment)