4.8 Cursor Position Information
If you are accustomed to other display editors, you may be surprised
that Emacs does not always display the page number or line number of
point in the mode line. In Emacs, this information is only rarely
needed, and a number of commands are available to compute and print it.
Since text is stored in a way that makes it difficult to compute the
information, it is not displayed all the time.
Print page number of point, and line number within page.
Print line number of point in the buffer.
Toggle automatic display of current line number.
Print number of lines and characters in the current region
(`count-lines-region'). Note: Mark, for information about the
Print character code of character after point, character position
of point, and column of point (`what-cursor-position').
There are several commands for printing line numbers:
* `M-x what-line' counts lines from the beginning of the file and
prints the line number point is on. The first line of the file is
line number 1. You can use these numbers as arguments to `M-x
* `M-x what-page' counts pages from the beginning of the file, and
counts lines within the page, printing both of them. Note:
Pages, for the command `C-x l', which counts the lines in the
* `M-=' (`count-lines-region') prints the number of lines in the
region (Note: Mark). Note: Pages, for the command `C-x l'
which counts the lines in the
The command `C-x =' (`what-cursor-position') can be used to find out
the column that the cursor is in, and other miscellaneous information
about point. It prints a line in the echo area that looks like this:
Char: c (0143, 99, 0x63) point=18862 of 24800(76%) column 53
(In fact, this is the output produced when point is before `column 53'
in the example.)
The four values after `Char:' describe the character that follows
point, first by showing it and then by giving its character code in
octal, decimal and hex.
`point=' is followed by the position of point expressed as a
character count. The front of the buffer counts as position 1, one
character later as 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 invisible, `C-x =' prints additional
text describing the current visible range. For example, it might say:
Char: c (0143, 99, 0x63) point=19674 of 24575(80%) <19591 - 19703> column 69
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 visible ones. Note: Narrowing.
If point is at the end of the buffer (or the end of the visible
part), `C-x =' omits any description of the character after point. The
output looks like
point=563026 of 563025(100%) column 0
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