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add unsetControlCHook to remove a Ctrl-C hook after it was set (#7267)

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* add unsetControlCHook to remove a Ctrl-C hook after it was set

Adds the inverse proc to setControlCHook in order to lift a Ctrl-C
hook after it has been set.

* remove check for noSignalHandler in system/excpt.nim
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Vindaar 2019-01-10 13:44:44 +01:00 • committed by Andreas Rumpf
commit 8e600b78ca
3 changed files with 10 additions and 0 deletions
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lib/system.nim
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@ -3458,6 +3458,10 @@ when not defined(JS): #and not defined(nimscript):
## allows you to override the behaviour of your application when CTRL+C
## is pressed. Only one such hook is supported.
when not defined(useNimRtl):
proc unsetControlCHook*()
## reverts a call to setControlCHook
proc writeStackTrace*() {.tags: [], gcsafe.}
## writes the current stack trace to ``stderr``. This is only works
## for debug builds. Since it's usually used for debugging, this