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Here are commands to get information about the size and position of parts of the buffer, and to count lines.
Display the page number of point, and the line number within that page.
Display the line number of point in the whole buffer.
Toggle automatic display of the current line number or column number. @xref{Optional Mode Line}.
Display the number of lines in the current region
(count-lines-region). @xref{Mark}, for information about the region.
Display the character code of character after point, character position of
point, and column of point (what-cursor-position).
Activer ou désactiver la mise en évidence de la ligne actuelle. Voir la section Displaying the Cursor.
Toggle automatic display of the size of the buffer. @xref{Optional Mode Line}.
M-x what-line displays the current line number in the echo area. You
can also see the current line number in the mode line; see The Mode Line;
but if you narrow the buffer, the line number in the mode line is relative
to the accessible portion (voir la section Narrowing). By contrast,
what-line shows both the line number relative to the narrowed region
and the line number relative to the whole buffer.
M-x what-page counts pages from the beginning of the file, and counts lines within the page, showing both numbers in the echo area. Voir la section Pages.
Use M-= (count-lines-region) to displays the number of lines in
the region (@pxref{Mark}). Voir la section Pages, for the command C-x l which
counts the lines in the current page.
The command C-x = (what-cursor-position) shows what cursor's
column position, and other information about point and the character after
it. It displays a line in the echo area that looks like this:
Char: c (99, #o143, #x63) point=28062 of 36168 (78%) column=53 |
The four values after ‘Char:’ describe the character that follows point, first by showing it and then by giving its character code in decimal, octal and hex. For a non-ASCII multibyte character, these are followed by ‘file’ and the character's representation, in hex, in the buffer's coding system, if that coding system encodes the character safely and with a single byte (@pxref{Coding Systems}). If the character's encoding is longer than one byte, Emacs shows ‘file ...’.
However, if the character displayed is in the range 0200 through 0377 octal, it may actually stand for an invalid UTF-8 byte read from a file. In Emacs, that byte is represented as a sequence of 8-bit characters, but all of them together display as the original invalid byte, in octal code. In this case, C-x = shows ‘part of display ...’ instead of ‘file’.
‘point=’ is followed by the position of point expressed as a character count. The start of the buffer is position 1, one character later is position 2, and so on. The next, larger, number is the total number of characters in the buffer. Afterward in parentheses comes the position expressed as a percentage of the total size.
‘column=’ is followed by the horizontal position of point, in columns from the left edge of the window.
If the buffer has been narrowed, making some of the text at the beginning and the end temporarily inaccessible, C-x = displays additional text describing the currently accessible range. For example, it might display this:
Char: C (67, #o103, #x43) point=252 of 889 (28%) <231-599> column=0 |
where the two extra numbers give the smallest and largest character position that point is allowed to assume. The characters between those two positions are the accessible ones. Voir la section Narrowing.
If point is at the end of the buffer (or the end of the accessible part), the C-x = output does not describe a character after point. The output might look like this:
point=36169 of 36168 (EOB) column=0 |
C-u C-x = displays the following additional information about a character.
ascii character set.
Here's an example showing the Latin-1 character A with grave accent, in a
buffer whose coding system is iso-latin-1, whose terminal coding
system is iso-latin-1 (so the terminal actually displays the
character as ‘À’), and which has font-lock-mode (voir la section Font Lock mode)
enabled:
character: À (2240, #o4300, #x8c0, U+00C0)
charset: latin-iso8859-1
(Right-Hand Part of Latin Alphabet 1…
code point: #x40
syntax: w which means: word
category: l:Latin
to input: type "`A" with latin-1-prefix
buffer code: #x81 #xC0
file code: #xC0 (encoded by coding system iso-latin-1)
display: terminal code #xC0
There are text properties here:
fontified t
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Ce document a été généré par Eric Reinbold le 23 Février 2009 en utilisant texi2html 1.78.