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Comment by matheusalmeida | Hacker News Reader

One could comment the "very long command" with # and it would appear in the history... no hacks.

this is hotkeyed to Meta-# by default

(one of the readline features i rediscover every three months or so and promptly forget)

Tested and it works brilliantly... it's definitely faster than C-a # RET... Thanks for the tip.

it's fully customizable too. e.g. if you work in a LISP REPL and use rlwrap to provide readline functionality, you could put this in your ~/.inputrc:

    $if lisp
            set comment-begin ;
            M-;: insert-comment
    $endif