ronak69 1453028975 Shell: Color bareword yellow if it's a prefix of at least one command ...

Before, if a bareword wasn't a runnable program's filename it got
colored red and white otherwise. Now, additionally it will be checked if
it is a "prefix" of a possible command and colored yellow if it is and
red if not.

Coloring this way provides another "feedback" to the user: If while
typing out a command name the color changes from yellow to red then a
typo occurred :^)

To check if a bareword is a prefix the `Shell::complete_program_name()`
function is utilized (if pressing tab gives you some suggestions then it
is a prefix).

2023-08-04 23:27:59 +03:30

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