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| -rw-r--r-- | ChangeLog | 3 | ||||
| -rw-r--r-- | Doc/Zsh/arith.yo | 5 |
2 files changed, 8 insertions, 0 deletions
@@ -1,5 +1,8 @@ 2024-02-04 Bart Schaefer <schaefer@zsh.org> + * unposted (cf. users/29635): Doc/Zsh/arith.yo: additional detail + of parameter expansion in math context. + * 52521: Etc/BUGS: mapfile handling of empty/unreadable files 2024-02-04 Mikael Magnusson <mikachu@gmail.com> diff --git a/Doc/Zsh/arith.yo b/Doc/Zsh/arith.yo index bc3e35ad5..9f5298821 100644 --- a/Doc/Zsh/arith.yo +++ b/Doc/Zsh/arith.yo @@ -206,6 +206,11 @@ example, example(((val2 = val1 * 2))) assigns twice the value of tt($val1) to the parameter named tt(val2). +If the expansion of tt($val1) is text rather than a number, then when +tt(val1) is referenced that text is itself evaluated as a math expression +as if surrounded by parentheses `tt(LPAR()$val1)tt(RPAR())'. Expansion +continues until there are no more parameter references, a number has +resulted, or an expression error occurs. An internal integer representation of a named parameter can be specified with the tt(integer) builtin. |