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-rw-r--r--hurd/console.h8
1 files changed, 7 insertions, 1 deletions
diff --git a/hurd/console.h b/hurd/console.h
index 065ed7d2..16bc068d 100644
--- a/hurd/console.h
+++ b/hurd/console.h
@@ -50,7 +50,13 @@ typedef struct
uint32_t italic : 1;
uint32_t bold : 1;
} conchar_attr_t;
-
+
+/* We support double-width characters by using an extra bit to identify the
+ continuation in the character matrix. The constants below document our
+ usage of wchar_t. */
+#define CONS_WCHAR_MASK ((wchar_t) 0x401fffff)
+#define CONS_WCHAR_CONTINUED ((wchar_t) 0x40000000)
+
typedef struct
{
wchar_t chr;