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This used expect_re with a regex ending in `.*`, followed by an `expect_prompt`. This meant that, depending on the timing, the regex could swallow the prompt marker, which caused extremely confusing output like >Testing file pexpects/generic.py:Failed to match pattern: prompt 14 > ... > OUTPUT +1.33 ms (Line 70): \rprompt 13>functions\r\nN_, abbr, > alias, bg, cd, [SNIP], up-or-search, vared, wait\r\n⏎ > \r⏎ \r\rprompt 14> Yeah - it shows that "prompt 14" was in the output and it can't find "prompt 14". I could reproduce the failure locally when running the tests repeatedly. I got one after 17 attempts and so far haven't been able to reproduce it with this change applied.