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Improve documentation of case-conversion commands
* doc/emacs/text.texi (Case): Include the commands with negative arguments. (Bug#71220)
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@ -839,10 +839,17 @@ range of text to upper case or to lower case.
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@table @kbd
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@item M-l
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Convert following word to lower case (@code{downcase-word}).
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@item M-- M-l
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Convert previous/last word to lower case. Note: @kbd{Meta--} is
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Meta-minus.
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@item M-u
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Convert following word to upper case (@code{upcase-word}).
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@item M-- M-u
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Convert previous/last last word to all upper case.
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@item M-c
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Capitalize the following word (@code{capitalize-word}).
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@item M-- M-c
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Convert previous/last last word to lower case with capital initial.
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@item C-x C-l
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Convert region to lower case (@code{downcase-region}).
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@item C-x C-u
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@ -869,10 +876,11 @@ from all upper case to mixed case, because you can move through the
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text using @kbd{M-l}, @kbd{M-u} or @kbd{M-c} on each word as
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appropriate, occasionally using @kbd{M-f} instead to skip a word.
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When given a negative argument, the word case conversion commands apply
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to the appropriate number of words before point, but do not move point.
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This is convenient when you have just typed a word in the wrong case: you
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can give the case conversion command and continue typing.
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When given a negative argument, as in @w{@kbd{C-u - 5 M-c}}, the
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word case-conversion commands apply to the appropriate number of words
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before point, but do not move point. This is convenient when you have
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just typed a word in the wrong case: you can give the case conversion
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command, like @kbd{M-- M-u}, and continue typing.
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If a word case conversion command is given in the middle of a word,
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it applies only to the part of the word which follows point. (This is
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