It is remarkable to see the quotes omitted where they may be useful (around the substitution), and placed where they are definitely optional. (Occurs two times.)

To be internally consistent with the rest of this file, please put a single space after the left-paren and before the right-paren. E.g., $(sysctl ...) => $( sysctl ... )

Also, what Jilles said.

Same thing here as line 312 of console/keymap; add whitespace and quotes

Using wrong comparison operator; -ne should be !=
Both exist as operators but -ne is for numbers and != is for strings

% sh -c '[ foo -ne bar ]'
[: foo: bad number
% sh -c '[ foo != bar ]'
% echo $?
0

Using the wrong comparison operator; -ne is for numeric comparison, != is for string comparison

Quotes unnecessary ... only needed if text contains *, [, ], |, ', !, #, (, ), {, }, ?, ;, or whitespace

same as line 13 of console/keymap -- remove unnecessary quotes around vt

remove quotes around vt

quotes around vt