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Diffstat (limited to 'doc/lispref/windows.texi')
| -rw-r--r-- | doc/lispref/windows.texi | 19 |
1 files changed, 13 insertions, 6 deletions
diff --git a/doc/lispref/windows.texi b/doc/lispref/windows.texi index e45201b0570..7186791f94a 100644 --- a/doc/lispref/windows.texi +++ b/doc/lispref/windows.texi @@ -1,6 +1,6 @@ @c -*-texinfo-*- @c This is part of the GNU Emacs Lisp Reference Manual. -@c Copyright (C) 1990-1995, 1998-1999, 2001-2015 Free Software +@c Copyright (C) 1990-1995, 1998-1999, 2001-2016 Free Software @c Foundation, Inc. @c See the file elisp.texi for copying conditions. @node Windows @@ -3706,6 +3706,11 @@ The return value is the total amount of leftward horizontal scrolling in effect after the change---just like the value returned by @code{window-hscroll} (below). +Note that text in paragraphs whose base direction is right-to-left +(@pxref{Bidirectional Display}) moves in the opposite direction: e.g., +it moves to the right when @code{scroll-left} is invoked with a +positive value of @var{count}. + Once you scroll a window as far right as it can go, back to its normal position where the total leftward scrolling is zero, attempts to scroll any farther right have no effect. @@ -3727,8 +3732,9 @@ of scrolling, this works just like @code{scroll-left}. @defun window-hscroll &optional window This function returns the total leftward horizontal scrolling of @var{window}---the number of columns by which the text in @var{window} -is scrolled left past the left margin. The default for -@var{window} is the selected window. +is scrolled left past the left margin. (In right-to-left paragraphs, +the value is the total amount of the rightward scrolling instead.) +The default for @var{window} is the selected window. The return value is never negative. It is zero when no horizontal scrolling has been done in @var{window} (which is usually the case). @@ -3753,9 +3759,10 @@ scrolling has been done in @var{window} (which is usually the case). @defun set-window-hscroll window columns This function sets horizontal scrolling of @var{window}. The value of @var{columns} specifies the amount of scrolling, in terms of columns -from the left margin. The argument @var{columns} should be zero or -positive; if not, it is taken as zero. Fractional values of -@var{columns} are not supported at present. +from the left margin (right margin in right-to-left paragraphs). The +argument @var{columns} should be zero or positive; if not, it is taken +as zero. Fractional values of @var{columns} are not supported at +present. Note that @code{set-window-hscroll} may appear not to work if you test it by evaluating a call with @kbd{M-:} in a simple way. What happens |