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48601/0004: docs: return: Give examples of using arithmetic evaluation.

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Daniel Shahaf 2021-04-16 18:04:13 +00:00
parent b992d91059
commit 4202c0bbe3
2 changed files with 11 additions and 2 deletions
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@ -1,5 +1,8 @@
2021-05-18 Daniel Shahaf <d.s@daniel.shahaf.name>
* 48601/0004: Doc/Zsh/builtins.yo: docs: return: Give examples
of using arithmetic evaluation.
* 48601/0003: Doc/Zsh/builtins.yo: docs: functions -M: Add a
subheading and index entries.

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Doc/Zsh/builtins.yo
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@ -1627,7 +1627,13 @@ cindex(functions, returning from)
item(tt(return) [ var(n) ])(
Causes a shell function or `tt(.)' script to return to
the invoking script with the return status specified by
an arithmetic expression var(n). If var(n)
an arithmetic expression var(n).
For example, the following prints `tt(42)':
example(() { integer foo=40; return "foo + 2" }
echo $?)
If var(n)
is omitted, the return status is that of the last command
executed.
@ -1638,7 +1644,7 @@ will return to whatever it was previously processing; with a non-zero
status, the shell will behave as interrupted except that the return
status of the trap is retained. Note that the numeric value of the signal
which caused the trap is passed as the first argument, so the statement
`tt(return $((128PLUS()$1)))' will return the same status as if the signal
`tt(return "128PLUS()$1")' will return the same status as if the signal
had not been trapped.
)
module(sched)(zsh/sched)