Commit 19e7dd23 authored by Richard M. Stallman's avatar Richard M. Stallman
Browse files

(Refill): Refer to Long Lines Mode.

(Longlines): New node.
(Auto Fill): Don't index "word wrap" here.
(Filling): Add Longlines to menu.
parent 63cc3b09
......@@ -403,13 +403,13 @@ Text}).
* Fill Prefix:: Filling paragraphs that are indented
or in a comment, etc.
* Adaptive Fill:: How Emacs can determine the fill prefix automatically.
* Longlines:: Editing text with very long lines.
@end menu
@node Auto Fill
@subsection Auto Fill Mode
@cindex Auto Fill mode
@cindex mode, Auto Fill
@cindex word wrap
@dfn{Auto Fill} mode is a minor mode in which lines are broken
automatically when they become too wide. Breaking happens only when
......@@ -474,16 +474,19 @@ you type or modify them in other ways. It provides an effect similar
to typical word processor behavior. This works by running a
paragraph-filling command at suitable times.
When you are typing text, only characters which normally trigger
auto filling, like the space character, will trigger refilling. This
is to avoid making it too slow. Apart from self-inserting characters,
other commands which modify the text cause refilling.
The current implementation is preliminary and probably not robust.
We expect to improve on it.
To toggle the use of Refill mode in the current buffer, type
@kbd{M-x refill-mode}.
@kbd{M-x refill-mode}. When you are typing text, only characters
which normally trigger auto filling, like the space character, will
trigger refilling. This is to avoid making it too slow. Apart from
self-inserting characters, other commands which modify the text cause
refilling.
The current implementation is preliminary and not robust. You can
get better ``line wrapping'' behavior using Longlines mode.
@xref{Longlines}. However, Longlines mode has an important
side-effect: the newlines that it inserts for you are not saved to
disk, so the files that you make with Longlines mode will appear to be
completely unfilled if you edit them without Longlines mode.
@node Fill Commands
@subsection Explicit Fill Commands
......@@ -745,6 +748,56 @@ line, and it should return the appropriate fill prefix based on that
line. If it returns @code{nil}, that means it sees no fill prefix in
that line.
@node Longlines
@subsection Long Lines Mode
@cindex refilling text, word processor style
@cindex modes, Long Lines
@cindex word wrap
@cindex Long Lines minor mode
Long Lines mode is a minor mode for @dfn{word wrapping}; it lets you
edit ``unfilled'' text files, which Emacs would normally display as a
bunch of extremely long lines. Many text editors, such as those built
into many web browsers, normally do word wrapping.
@findex longlines-mode
To enable Long Lines mode, type @kbd{M-x longlines-mode}. If the
text is full of long lines, this will ``wrap'' them
immediately---i.e., break up to fit in the window. As you edit the
text, Long Lines mode automatically re-wraps lines by inserting or
deleting @dfn{soft newlines} as necessary (@pxref{Hard and Soft
Newlines}.) These soft newlines won't show up when you save the
buffer into a file, or when you copy the text into the kill ring,
clipboard, or a register.
@findex longlines-auto-wrap
Word wrapping is @emph{not} the same as ordinary filling
(@pxref{Fill Commands}). It does not contract multiple spaces into a
single space, recognize fill prefixes (@pxref{Fill Prefix}), or
perform adaptive filling (@pxref{Adaptive Fill}). The reason for this
is that a wrapped line is still, conceptually, a single line. Each
soft newline is equivalent to exactly one space in that long line, and
vice versa. However, you can still call filling functions such as
@kbd{M-q}, and these will work as expected, inserting soft newlines
that won't show up on disk or when the text is copied. You can even
rely entirely on the normal fill commands by turning off automatic
line wrapping, with @kbd{C-u M-x longlines-auto-wrap}. To turn
automatic line wrapping back on, type @kbd{M-x longlines-auto-wrap}.
@findex longlines-show-hard-newlines
Whenever you type @kbd{RET}, you are inserting a hard newline. If
you want to see where all the hard newlines are, type @kbd{M-x
longlines-show-hard-newlines}. This will mark each hard newline with
a special symbol. The same command with a prefix argument turns this
display off.
Long Lines mode does not change normal text files that are already
filled, since the existing newlines are considered hard newlines.
Before Long Lines can do anything, you need to transform each
paragraph into a long line. One way is to set @code{fill-column} to a
large number (e.g., @kbd{C-u 9999 C-x f}), re-fill all the paragraphs,
and then set @code{fill-column} back to its original value.
@node Case
@section Case Conversion Commands
@cindex case conversion
......
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