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Johannes Schindelin 92b5518358 setup_pseudoconsole(): handle missing/incorrect helper gracefully
When `cygwin-console-helper.exe` is either missing, or corresponds to a
different Cygwin runtime, we currently wait forever while setting up
access to the pseudo console, even long after the process is gone that
was supposed to signal that it set up access to the pseudo console.

Let's handle that more gracefully: if the process exited without
signaling, we cannot use the pseudo console. In that case, let's just
fall back to not using it.

Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de>
2020-10-14 10:54:18 -04:00
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