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sfddiff

SFDDIFF(1)						      General Commands Manual							SFDDIFF(1)

NAME

       sfddiff - compare two font files

SYNOPSIS

       sfddiff	[--help]  [--ignorehints]  [--ignorenames]  [--ignoregpos]  [--ignoregsub]  [--ignorebitmaps] [--exact] [--warn] [--merge outfile]
       [--usage] [--version] fontfile1 fontfile2

DESCRIPTION

       The program sfddiff compares two font files, which may be in any format fontforge(1) can read.  It will notice the following differences:

       1)     Characters are present in one font but not in the other.

       2)     Characters are present in both fonts but have different sets of outlines or references.  The outlines may be compared so	that  only
	      exact  matches  are accepted, or so that a fuzzier match is used.  Similarly references may need to match exactly, or may be matched
	      after an unlink.

	      This fuzzy comparison is useful when comparing truetype and postscript fonts, or when comparing a font with references to one  with-
	      out.

       3)     The postscript hints or truetype instructions are different.

       4)     The font names (the truetype `name' table) differ.

       5)     The kerning (and other `gpos' information) differs.

       6)     The ligatures (and other `gsub' information) differ.

       7)     Any bitmap strikes present in one font but not in the other.

       8)     Any bitmap characters present in one strike of one font but in the equivalent strike of the other.

       9)     Any bitmap characters which differ.

OPTIONS

       --help Provide a description with a list of the available options.

       --ignorehints
	      Suppress the reporting of hint/instruction differences.

       --ignoregpos
	      Suppress the reporting of kerning (and other `gpos') differences.

       --ignoregsub
	      Suppress the reporting of ligature (and other `gsub') differences.

       --ignorenames
	      Suppress the reporting of name string differences.

       --ignorebitmaps
	      Suppress the reporting of bitmap differences.

       --exact
	      Require outlines to match exactly.

       --warn Warn if the outlines/references are slightly different.

       --merge outfile
	      Store  a	merged version of the two fonts into the specified output file.  The merged data will be based on sfdfile1, as well as any
	      characters present in sfdfile2 but not in sfdfile1 will be added, and the outlines of sfdfile2 will be  placed  in  the  background.
	      Finally,	for  any  characters  with different outlines or references the background of the character will contain the outlines from
	      sfdfile2 (references will be unlinked into outlines and those outlines also will be added).

       --usage
	      Display the usage description.

       --version
	      Display the current version.

SEE ALSO

       fontforge(1)

       The HTML version of the fontforge manual at:

	      http://fontforge.sourceforge.net/

AUTHOR

       Copyright (C) 2000-2006 by George Williams (gww@silcom.com).  Manual page heavily rewritten and modified to use standard -man(5) macros	by
       R.P.C. Rodgers (rodgers@nlm.nih.gov), 23 October 2002.

								   8 April 2006 							SFDDIFF(1)