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Diffstat (limited to 'doc/emacs/basic.texi')
| -rw-r--r-- | doc/emacs/basic.texi | 26 |
1 files changed, 24 insertions, 2 deletions
diff --git a/doc/emacs/basic.texi b/doc/emacs/basic.texi index f64b3995d25..a2a934ff243 100644 --- a/doc/emacs/basic.texi +++ b/doc/emacs/basic.texi @@ -406,8 +406,8 @@ Delete the character before point, or the region if it is active (@code{delete-backward-char}). @item @key{Delete} -Delete the character after point, or the region if it is active -(@code{delete-forward-char}). +Delete the character or grapheme cluster after point, or the region if +it is active (@code{delete-forward-char}). @item C-d Delete the character after point (@code{delete-char}). @@ -438,11 +438,18 @@ with the @key{Delete} key; we will discuss @key{Delete} momentarily.) On some text terminals, Emacs may not recognize the @key{DEL} key properly. @xref{DEL Does Not Delete}, if you encounter this problem. +@cindex grapheme cluster, deletion +@cindex delete entire grapheme cluster The @key{Delete} (@code{delete-forward-char}) command deletes in the opposite direction: it deletes the character after point, i.e., the character under the cursor. If point was at the end of a line, this joins the following line onto this one. Like @kbd{@key{DEL}}, it deletes the text in the region if the region is active (@pxref{Mark}). +If the character after point is composed with following characters and +displayed as a single display unit, a so-called @dfn{grapheme cluster} +representing the entire sequence, @key{Delete} deletes the entire +sequence in one go. This is in contrast to @key{DEL} which always +deletes a single character, even if the character is composed. @kbd{C-d} (@code{delete-char}) deletes the character after point, similar to @key{Delete}, but regardless of whether the region is @@ -630,6 +637,21 @@ before they get too long, by inserting newlines. If you prefer, you can make Emacs insert a newline automatically when a line gets too long, by using Auto Fill mode. @xref{Filling}. +@cindex continuation lines, visual wrap prefix +@findex visual-wrap-prefix-mode +@findex global-visual-wrap-prefix-mode + Normally, the first character of each continuation line is +positioned at the beginning of the screen line where it is displayed. +The minor mode @code{visual-wrap-prefix-mode} and its global +(@pxref{Minor Modes}) counterpart +@code{global-visual-wrap-prefix-mode} arranges that continuation lines +be prefixed by slightly adjusted versions of the fill prefixes +(@pxref{Fill Prefix}) of their respective logical lines, so that +indentation characters or the prefixes of source code comments are +replicated across every continuation line, and the appearance of such +comments or indentation is not broken. These prefixes are only shown +on display, and does not change the buffer text in any way. + Sometimes, you may need to edit files containing many long logical lines, and it may not be practical to break them all up by adding newlines. In that case, you can use Visual Line mode, which enables |