Simon Tatham
4cd040bced
uxpty.c: stop setting DISPLAY to "(null)".
...
In some contexts (namely pterm on a pure Wayland system, and Uppity),
seat_get_x_display() will return NULL. In that situation uxpty.c was
cheerfully passing it to dupprintf regardless, which in principle is
undefined behaviour and in practice was causing it to construct the
silly environment string "DISPLAY=(null)".
Now we handle that case by unsetenv("DISPLAY") instead.
2019-04-01 09:06:12 +01:00
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