Commit 5ac343ac authored by Richard M. Stallman's avatar Richard M. Stallman
Browse files

(Text Representations): Clarify position-bytes.

(Character Sets): Add list-charset-chars.
(Scanning Charsets): Add charset-after.
(Encoding and I/O): Minor fix.
parent 51485df2
......@@ -95,9 +95,10 @@ default value to @code{nil} early in startup.
@defun position-bytes position
@tindex position-bytes
Return the byte-position corresponding to buffer position @var{position}
in the current buffer. If @var{position} is out of range, the value
is @code{nil}.
Return the byte-position corresponding to buffer position
@var{position} in the current buffer. This is 1 at the start of the
buffer, and counts upward in bytes. If @var{position} is out of
range, the value is @code{nil}.
@end defun
@defun byte-to-position byte-position
......@@ -359,6 +360,11 @@ as the property list of that symbol. Charset properties are used for
special purposes within Emacs.
@end defun
@deffn Command list-charset-chars charset
This command displays a list of characters in the character set
@var{charset}.
@end deffn
@node Chars and Bytes
@section Characters and Bytes
@cindex bytes and characters
......@@ -474,6 +480,13 @@ part of a buffer or a string. One use for this is in determining which
coding systems (@pxref{Coding Systems}) are capable of representing all
of the text in question.
@defun charset-after &optional pos
This function return the charset of a character in the current buffer
at position @var{pos}. If @var{pos} is omitted or @code{nil}, it
defauls to the current value of point. If @var{pos} is out of range,
the value is @code{nil}.
@end defun
@defun find-charset-region beg end &optional translation
This function returns a list of the character sets that appear in the
current buffer between positions @var{beg} and @var{end}.
......@@ -673,7 +686,7 @@ a coding system for decoding the file data, and @code{write-region}
uses one to encode the buffer contents.
You can specify the coding system to use either explicitly
(@pxref{Specifying Coding Systems}), or implicitly using the defaulting
(@pxref{Specifying Coding Systems}), or implicitly using a default
mechanism (@pxref{Default Coding Systems}). But these methods may not
completely specify what to do. For example, they may choose a coding
system such as @code{undefined} which leaves the character code
......
Markdown is supported
0% or .
You are about to add 0 people to the discussion. Proceed with caution.
Finish editing this message first!
Please register or to comment