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32768 with further modifications: LOCAL_LOOPS option.

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Peter Stephenson 2014-06-13 21:39:44 +01:00
parent d6698d89a6
commit b5198b10a1
7 changed files with 90 additions and 8 deletions
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23
Doc/Zsh/options.yo
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@ -1631,6 +1631,21 @@ tt(FUNCTION_ARGZERO) from on to off (or off to on) does not change the
current value of tt($0). Only the state upon entry to the function or
script has an effect. Compare tt(POSIX_ARGZERO).
)
pindex(LOCAL_LOOPS)
pindex(NO_LOCAL_LOOPS)
pindex(LOCALLOOPS)
pindex(NOLOCALLOOPS)
cindex(break, inside function)
cindex(continue, inside function)
cinde(function, scope of break and continue)
item(tt(LOCAL_LOOPS))(
When this option is not set, the effect of tt(break) and tt(continue)
commands may propagate outside function scope, affecting loops in
calling functions. When the option is set in a calling function, a
tt(break) or a tt(continue) that is not caught within a called function
(regardless of the setting of the option within that function)
produces a warning and the effect is cancelled.
)
pindex(LOCAL_OPTIONS)
pindex(NO_LOCAL_OPTIONS)
pindex(LOCALOPTIONS)
@ -1639,10 +1654,10 @@ item(tt(LOCAL_OPTIONS) <K>)(
If this option is set at the point of return from a shell function,
most options (including this one) which were in force upon entry to
the function are restored; options that are not restored are
tt(PRIVILEGED) and tt(RESTRICTED). Otherwise, only this option and the
tt(XTRACE) and tt(PRINT_EXIT_VALUE) options are restored. Hence
if this is explicitly unset by a shell function the other options in
force at the point of return will remain so.
tt(PRIVILEGED) and tt(RESTRICTED). Otherwise, only this option,
and the tt(LOCAL_LOOPS), tt(XTRACE) and tt(PRINT_EXIT_VALUE) options are
restored. Hence if this is explicitly unset by a shell function the
other options in force at the point of return will remain so.
A shell function can also guarantee itself a known shell configuration
with a formulation like `tt(emulate -L zsh)'; the tt(-L) activates
tt(LOCAL_OPTIONS).