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+
+#------------------------------------------------------------------------------
+# $File: xwindows,v 1.13 2022/03/24 15:48:58 christos Exp $
+# xwindows: file(1) magic for various X/Window system file formats.
+
+# Compiled X Keymap
+# XKM (compiled X keymap) files (including version and byte ordering)
+1 string mkx Compiled XKB Keymap: lsb,
+>0 byte >0 version %d
+>0 byte =0 obsolete
+0 string xkm Compiled XKB Keymap: msb,
+>3 byte >0 version %d
+>3 byte =0 obsolete
+
+# xfsdump archive
+0 string xFSdump0 xfsdump archive
+>8 belong x (version %d)
+
+# Jaleo XFS files
+0 long 395726 Jaleo XFS file
+>4 long x - version %d
+>8 long x - [%d -
+>20 long x \b%dx
+>24 long x \b%dx
+>28 long 1008 \bYUV422]
+>28 long 1000 \bRGB24]
+
+# Xcursor data
+# X11 mouse cursor format defined in libXcursor, see
+# https://www.x.org/archive/X11R6.8.1/doc/Xcursor.3.html
+# https://cgit.freedesktop.org/xorg/lib/libXcursor/tree/include/X11/Xcursor/Xcursor.h
+0 string Xcur Xcursor data
+!:mime image/x-xcursor
+>10 leshort x version %d
+>>8 leshort x \b.%d
+
+# X bitmap https://en.wikipedia.org/wiki/X_BitMap
+0 search/2048 #define\040
+>&0 regex [a-zA-Z0-9]+_width\040 xbm image
+>>&0 regex [0-9]+ (%sx
+>>>&0 string \n#define\040
+>>>>&0 regex [a-zA-Z0-9]+_height\040
+>>>>>&0 regex [0-9]+ \b%s)