René's URL Explorer Experiment

{"@context":"https://schema.org","@type":"DiscussionForumPosting","headline":"PowerShell cannot have a pipeline with more then 2 native processes with redirected stdin","articleBody":"Steps to reproduce\r\n------------------\r\n\r\n```\r\nps aux | grep powershell | grep -v grep\r\n```\r\n\r\nExpected behavior\r\n-----------------\r\n\r\nReturn filtered results. I.e. same as\r\n\r\n```\r\nPS \u003e $a = ps aux | grep powershell; $a | grep -v grep\r\nvors          2995   7.4  0.3  4813880  44460 s000  S+   11:07AM   0:10.07 -powershell\r\nvors          6628   0.0  0.1  4810520  19192 s001  S+   11:35AM   0:02.51 -powershell\r\n```\r\n\r\nActual behavior\r\n---------------\r\n\r\nPipeline hanging (first grep never receives \"output closed\" event, besides the fact that corresponding stream is disposed)\r\n\r\nEnvironment data\r\n----------------\r\n\r\n\u003c!-- provide the output of $PSVersionTable --\u003e\r\n\r\n```powershell\r\n\u003e $PSVersionTable\r\nName                           Value                                                                                                                                                       \r\n----                           -----                                                                                                                                                       \r\nPSVersion                      6.0.0-alpha                                                                                                                                                 \r\nPSEdition                      Core                                                                                                                                                        \r\nPSCompatibleVersions           {1.0, 2.0, 3.0, 4.0...}                                                                                                                                     \r\nBuildVersion                   3.0.0.0                                                                                                                                                     \r\nGitCommitId                    v6.0.0-alpha.17                                                                                                                                             \r\nCLRVersion                                                                                                                                                                                 \r\nWSManStackVersion              3.0                                                                                                                                                         \r\nPSRemotingProtocolVersion      2.3                                                                                                                                                         \r\nSerializationVersion           1.1.0.1    \r\n```\r\n","author":{"url":"https://github.com/vors","@type":"Person","name":"vors"},"datePublished":"2017-03-13T20:23:19.000Z","interactionStatistic":{"@type":"InteractionCounter","interactionType":"https://schema.org/CommentAction","userInteractionCount":12},"url":"https://github.com/3321/PowerShell/issues/3321"}