Info Catalog efaq: Debugging a customization file efaq: Common requests efaq: Displaying the current file name in the titlebar

efaq: Displaying the current line or column

 
 5.5 How do I make Emacs display the current line (or column) number?
 ====================================================================
 
 By default, Emacs displays the current line number of the point in the
 mode line.  You can toggle this feature off or on with the command ‘M-x
 line-number-mode’, or by setting the variable ‘line-number-mode’.  Note
 that Emacs will not display the line number if the buffer’s size in
 bytes is larger than the value of the variable
 ‘line-number-display-limit’.
 
    You can similarly display the current column with ‘M-x
 column-number-mode’, or by putting the form
 
      (setq column-number-mode t)
 
 in your ‘.emacs’ file.  This feature is off by default.
 
    The ‘"%c"’ format specifier in the variable ‘mode-line-format’ will
 insert the current column’s value into the mode line.  See the
 documentation for ‘mode-line-format’ (using ‘C-h v mode-line-format
 <RET>’) for more information on how to set and use this variable.
 
    The ‘linum’ package (distributed with Emacs since version 23.1)
 displays line numbers in the left margin, like the “set number”
 capability of ‘vi’.  The packages ‘setnu’ and ‘wb-line-number’ (not
 distributed with Emacs) also implement this feature.
 

Info Catalog efaq: Debugging a customization file efaq: Common requests efaq: Displaying the current file name in the titlebar