brltty-trtxt -V (return code: 4)
brltty-trtxt: input error: version: Invalid or incomplete multibyte or wide character
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brltty-trtxt --help (return code: 0)
Usage: brltty-trtxt [option ...] [{input-file | -} ...]
-i file --input-table= Path to input text table.
-o file --output-table= Path to output text table.
-6 --six-dots Remove dots seven and eight.
-h --help Print a usage summary (commonly used options
only), and then exit.
-H --full-help Print a usage summary (all options), and then
exit.