Whenever I type "a" in Terminal, I get a beep, and no output. If in uppercase, "A" types fine. This computer (new mac mini) is only a few days old, but I've done a few things that may have caused this behavior:
1) Installed DoubleCommand. Disabling all options in DoubleCommand doesn't help
2) Change some of the keyboard shortcuts in Terminal (specifically: Home, PgUp, PgDn, End, shift+PgUp, shift+PgDn). Switching to a different theme (where my keyboard shortcut changes don't exist) does not help.
What I haven't tried:
1) restart (Update2: tried, didn't help) 2) uninstalling DoubleCommand (Update 2: tried, didn't help)
lowercase "a" works in Vim, but just not at command prompt