extension mechanism: signal in View process affects Open process

[mc-butler]

Important

This issue was migrated from Trac:

Origin	https://midnight-commander.org/ticket/3788
Reporter	yury_t

Happens in 4.8.17-4.8.19, at least.

If the program launched to View (F3) some content type registered in extension file (e.g. lynx or links for html) is interrupted by Ctrl+C,
the program launched previously in background in the same mc instance to Open (ENTER) something is interrupted too. Even mplayer which normally ignores Ctrl+C.

Replication:
1) One or more Open actions. The Open action description must launch something into background and be long-running, like (mplayer %f &) on video or even just (xterm -e lynx %f &) on any type, just to sit and show the contents.

2) In the same mc instance -- View (F3) any local .html file, so lynx (or links) starts, interrupt it by Ctrl+C.

3) Both 'viewing' program and 'opening' program(s) (any number of instances) are terminated.

However,

a) If lynx or links is launched 'manually' in subshell and interrupted, it does not affect any running Open programs.

b) Does not happen between mc instances.

[mc-butler]

Changed by zaytsev-work (@zyv) on Mar 9, 2017 at 11:05 UTC (comment 1)

I wonder if this ever worked. If we have a good revision, then we can do bisect.