FcDefaultSubstitute(3)                                  FcDefaultSubstitute(3)



NAME
       FcDefaultSubstitute - Perform default substitutions in a pattern

SYNOPSIS
       #include <fontconfig/fontconfig.h>

       void FcDefaultSubstitute (FcPattern *pattern);

DESCRIPTION
       Supplies default values for underspecified font patterns:

       o Patterns without a specified style or weight are set to Medium

       o Patterns without a specified style or slant are set to Roman

       o Patterns without a specified pixel size are given one computed from
         any specified point size (default 12), dpi (default 75) and scale
         (default 1).

       This function has been replaced by FcConfigSetDefaultSubstitute and
       will be deprecated.

Fontconfig 2.18.3               23 August 2026          FcDefaultSubstitute(3)