Follow Techotopia on Twitter

On-line Guides
All Guides
eBook Store
iOS / Android
Linux for Beginners
Office Productivity
Linux Installation
Linux Security
Linux Utilities
Linux Virtualization
Linux Kernel
System/Network Admin
Programming
Scripting Languages
Development Tools
Web Development
GUI Toolkits/Desktop
Databases
Mail Systems
openSolaris
Eclipse Documentation
Techotopia.com
Virtuatopia.com

How To Guides
Virtualization
General System Admin
Linux Security
Linux Filesystems
Web Servers
Graphics & Desktop
PC Hardware
Windows
Problem Solutions
Privacy Policy

  




 

 

Next: , Previous: Display X, Up: Emacs Invocation


C.7 Font Specification Options

By default, Emacs displays text in a twelve point Courier font (when using X). You can specify a different font on your command line through the option ‘-fn name’ (or ‘--font’, which is an alias for ‘-fn’).

-fn name
--font=name
Use font name as the default font.

Under X, each font has a long name which consists of fourteen words or numbers, separated by dashes. Some fonts also have shorter nicknames. For instance, ‘9x15’ is such a nickname. This font makes each character nine pixels wide and fifteen pixels high. You can use either kind of name. Case is insignificant in both kinds. You can use wildcard patterns for the font name; then Emacs lets X choose one of the fonts that match the pattern. The wildcard character ‘*’ matches any sequence of characters (including none) and ‘?’ matches any single character. However, matching is implementation-dependent, and can be inaccurate when wildcards match dashes in a long name. For reliable results, supply all 14 dashes and use wildcards only within a field. Here is an example, which happens to specify the font whose nickname is ‘6x13’:

     emacs -fn \
       "-misc-fixed-medium-r-semicondensed--13-*-*-*-c-60-iso8859-1" &

You can also specify the font in your .Xdefaults file:

     emacs.font: -misc-fixed-medium-r-semicondensed--13-*-*-*-c-60-iso8859-1

Note that if you use a wildcard pattern on the command line, you need to enclose it in single or double quotes, to prevent the shell from accidentally expanding it into a list of file names. On the other hand, you should not quote the name in the .Xdefaults file.

The default font used by Emacs (under X) is:

     -adobe-courier-medium-r-*-*-*-120-*-*-*-*-iso8859-1

A long font name has the following form:

     -maker-family-weight-slant-widthtype-style...
     ...-pixels-height-horiz-vert-spacing-width-registry-encoding
maker
This is the name of the font manufacturer.
family
This is the name of the font family—for example, ‘courier’.
weight
This is normally ‘bold’, ‘medium’ or ‘light’. Other words may appear here in some font names.
slant
This is ‘r’ (roman), ‘i’ (italic), ‘o’ (oblique), ‘ri’ (reverse italic), or ‘ot’ (other).
widthtype
This is normally ‘condensed’, ‘extended’, ‘semicondensed’ or ‘normal’. Other words may appear here in some font names.
style
This is an optional additional style name. Usually it is empty—most long font names have two hyphens in a row at this point.
pixels
This is the font height, in pixels.
height
This is the font height on the screen, measured in tenths of a printer's point—approximately 1/720 of an inch. In other words, it is the point size of the font, times ten. For a given vertical resolution, height and pixels are proportional; therefore, it is common to specify just one of them and use ‘*’ for the other.
horiz
This is the horizontal resolution, in pixels per inch, of the screen for which the font is intended.
vert
This is the vertical resolution, in pixels per inch, of the screen for which the font is intended. Normally the resolution of the fonts on your system is the right value for your screen; therefore, you normally specify ‘*’ for this and horiz.
spacing
This is ‘m’ (monospace), ‘p’ (proportional) or ‘c’ (character cell).
width
This is the average character width, in pixels, multiplied by ten.
registry
encoding
These together make up the X font character set that the font depicts. (X font character sets are not the same as Emacs charsets, but they are solutions for the same problem.) You can use the xfontsel program to check which choices you have. However, normally you should use ‘iso8859’ for registry and ‘1’ for encoding.

You will probably want to use a fixed-width default font—that is, a font in which all characters have the same width. Any font with ‘m’ or ‘c’ in the spacing field of the long name is a fixed-width font. Here's how to use the xlsfonts program to list all the fixed-width fonts available on your system:

     xlsfonts -fn '*x*' | egrep "^[0-9]+x[0-9]+"
     xlsfonts -fn '*-*-*-*-*-*-*-*-*-*-*-m*'
     xlsfonts -fn '*-*-*-*-*-*-*-*-*-*-*-c*'

To see what a particular font looks like, use the xfd command. For example:

     xfd -fn 6x13

displays the entire font ‘6x13’.

While running Emacs, you can set the font of the current frame (see Frame Parameters) or for a specific kind of text (see Faces).


 
 
  Published under the terms of the GNU General Public License Design by Interspire