a563884af3
Makes the following changes: * (Fixes #15620) tty configuration was failing when stdout was redirected. The implementation now creates a pseudo terminal for stdin and checks stdout properly, so redirections of stdin/out/err should be handled now. * Handles terminal configuration when the Spack process moves between the foreground and background (possibly multiple times) during a build. * Spack adjusts terminal settings to allow users to to enable/disable build process output to the terminal using a "v" toggle, abnormal exit cases (like CTRL-C) could leave the terminal in an unusable state. This is addressed here with a special-case handler which restores terminal settings. Significantly extend testing of process output logger: * New PseudoShell object for setting up a master and child process and configuring file descriptor inheritance between the two * Tests for "v" verbosity toggle making use of the added PseudoShell object * Added `uniq` function which takes a list of elements and replaces any consecutive sequence of duplicate elements with a single instance (e.g. "112211" -> "121") Co-authored-by: Adam J. Stewart <ajstewart426@gmail.com> |
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