Check for proc_open/close in various scenarios. #4245
Merged
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Fixes #4178
Adds
Utils\check_proc_available()and uses it in the 6 places mentioned in #4178 (comment). It fatals on all butHelp_Command::pass_through_pager()where it just gives a debug warning.Edit: changed the tests to be phpunit-based, apart from the group aliases one, but all now use
{SRC_DIR}/bin/wp(not the phar) which isn't ideal.