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authorDaniel Shahaf <d.s@daniel.shahaf.name>2021-04-16 18:03:45 +0000
committerDaniel Shahaf <d.s@daniel.shahaf.name>2021-05-18 02:01:13 +0000
commitb992d91059b0a6bf2da7519aafcab9dff865498c (patch)
treecf3512119bb0e90d56da8d81fd7713a9109280a2 /Doc
parentf571aff1b2d56d8354ba2530eca30dd45785c714 (diff)
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48601/0003: docs: functions -M: Add a subheading and index entries.
Diffstat (limited to 'Doc')
-rw-r--r--Doc/Zsh/builtins.yo6
1 files changed, 6 insertions, 0 deletions
diff --git a/Doc/Zsh/builtins.yo b/Doc/Zsh/builtins.yo
index 51b1f1744..0129c6b57 100644
--- a/Doc/Zsh/builtins.yo
+++ b/Doc/Zsh/builtins.yo
@@ -893,6 +893,10 @@ without affecting the other. A typical idiom is that var(oldfn) is the
name of a library shell function which is then redefined to call
tt(newfn), thereby installing a modified version of the function.
+em(The )tt(-M)em( and )tt(+M)em( flags)
+cindex(defining mathematical functions)
+cindex(functions, defining mathematical)
+
Use of the tt(-M) option may not be combined with any of the options
handled by tt(typeset -f).
@@ -929,6 +933,8 @@ Therefore, care must be taken not to use syntactical constructs that perform
arithmetic evaluation after evaluating what is to be the result of the function.
For example:
+findex(zmath_cube)
+findex(cube)
example(# WRONG
zmath_cube+LPAR()+RPAR() {
(( $1 * $1 * $1 ))