transpose-chars, transpose-words non helpful at beginning of line

[Dan Jacobson]

       transpose-chars (C-t)
              Drag the character before point  forward  over  the
              character  at  point.  Point moves forward as well.
              If point is at the end of the line, then  transpose
              the  two  characters  before point.  Negative argu-

OK, but why no sugar it up some more? I typed
$ prm ....
when I wanted rpm. I want C-a C-t to fix it for me instead of flashing
the screen.  [Yes, C-a C-f C-t is just too much for a busy executive
like myself*.]  Certainly this case is just as valid as the special case
of when at the end of line.  Yes, currently emacs also flashes when
the cursor is at the beginning of the buffer, but I just sent a letter
to their sponsors to see what can be done about that... [gnu.emacs.bug]

              ments have no effect.
       transpose-words (M-t)
              Drag the word before  point  past  the  word  after
              point, moving the point over that word as well.

OK, you didn't mention that [in contrast to [non-helpful at present]
emacs] you do transpose the previous two words when the cursor is at
the end of line.  I like that behaviour, it is just that you haven't
mentioned it on the man page.

Also:
$ help transpose-chars
bash: help: no help topics match `transpose-chars'.  Try `help help'.
$ help help
help: help [-s] [pattern ...]
    Display helpful information about builtin commands.  If PATTERN is
    specified, gives detailed help on all commands matching PATTERN,

OK, but it seems that there is no way to learn about individual
Readline functions via help :-( .  One must consult the manual.  OK,
compromise:  how about:
$ help transpose-chars
bash: help: transpose-chars is a Readline command, try "man bash" for details.
$ help transp
bash: help: transpose-chars is a Readline command, try "man bash" for details.
bash: help: transpose-words is a Readline command, try "man bash" for details.

I mean it said "gives detailed help on all commands matching PATTERN".
[It didn't say "all commands except Readline commands, Dan."]
-- 
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* yeah.