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-rw-r--r--src/lisp.h17
1 files changed, 10 insertions, 7 deletions
diff --git a/src/lisp.h b/src/lisp.h
index 7f08159a145..5abde042d7f 100644
--- a/src/lisp.h
+++ b/src/lisp.h
@@ -569,13 +569,16 @@ typedef unsigned char UCHAR;
#define COMPILED_DOC_STRING 4
#define COMPILED_INTERACTIVE 5
-/* Flag bits in a character. These also get used in termhooks.h. */
-#define CHAR_ALT (0x020000)
-#define CHAR_SUPER (0x040000)
-#define CHAR_HYPER (0x080000)
-#define CHAR_SHIFT (0x100000)
-#define CHAR_CTL (0x200000)
-#define CHAR_META (0x400000)
+/* Flag bits in a character. These also get used in termhooks.h.
+ Richard Stallman <rms@gnu.ai.mit.edu> thinks that MULE
+ (MUlti-Lingual Emacs) might need 18 bits for the character value
+ itself, so we probably shouldn't use any bits lower than 0x040000. */
+#define CHAR_ALT (0x040000)
+#define CHAR_SUPER (0x080000)
+#define CHAR_HYPER (0x100000)
+#define CHAR_SHIFT (0x200000)
+#define CHAR_CTL (0x400000)
+#define CHAR_META (0x800000)
/* Data type checking */