diff --git a/iconvdata/ibm277.c b/iconvdata/ibm277.c
index d98f19d4f4..4170a88adb 100644
--- a/iconvdata/ibm277.c
+++ b/iconvdata/ibm277.c
@@ -23,6 +23,6 @@
 #define TABLES <ibm277.h>
 
 #define CHARSET_NAME	"IBM277//"
-#define HAS_HOLES	1	/* Not all 256 character are defined.  */
+#define HAS_HOLES	0
 
 #include <8bit-gap.c>
diff --git a/iconvdata/ibm278.c b/iconvdata/ibm278.c
index 20a74985e3..8f78b5a067 100644
--- a/iconvdata/ibm278.c
+++ b/iconvdata/ibm278.c
@@ -23,6 +23,6 @@
 #define TABLES <ibm278.h>
 
 #define CHARSET_NAME	"IBM278//"
-#define HAS_HOLES	1	/* Not all 256 character are defined.  */
+#define HAS_HOLES	0
 
 #include <8bit-gap.c>
diff --git a/iconvdata/ibm280.c b/iconvdata/ibm280.c
index 60d78963bc..35283a1691 100644
--- a/iconvdata/ibm280.c
+++ b/iconvdata/ibm280.c
@@ -23,6 +23,6 @@
 #define TABLES <ibm280.h>
 
 #define CHARSET_NAME	"IBM280//"
-#define HAS_HOLES	1	/* Not all 256 character are defined.  */
+#define HAS_HOLES	0
 
 #include <8bit-gap.c>
diff --git a/iconvdata/ibm284.c b/iconvdata/ibm284.c
index e2e20a0ce5..2fdd6e3a67 100644
--- a/iconvdata/ibm284.c
+++ b/iconvdata/ibm284.c
@@ -23,6 +23,6 @@
 #define TABLES <ibm284.h>
 
 #define CHARSET_NAME	"IBM284//"
-#define HAS_HOLES	1	/* Not all 256 character are defined.  */
+#define HAS_HOLES	0
 
 #include <8bit-gap.c>
diff --git a/iconvdata/ibm297.c b/iconvdata/ibm297.c
index 768b7c0693..f52b40cf35 100644
--- a/iconvdata/ibm297.c
+++ b/iconvdata/ibm297.c
@@ -23,6 +23,6 @@
 #define TABLES <ibm297.h>
 
 #define CHARSET_NAME	"IBM297//"
-#define HAS_HOLES	1	/* Not all 256 character are defined.  */
+#define HAS_HOLES	0
 
 #include <8bit-gap.c>
diff --git a/localedata/charmaps/IBM256 b/localedata/charmaps/IBM256
index 5cfd2db5f4..bdc1abf0ad 100644
--- a/localedata/charmaps/IBM256
+++ b/localedata/charmaps/IBM256
@@ -194,7 +194,7 @@ CHARMAP
 <U00BE>     /xb9         VULGAR FRACTION THREE QUARTERS
 <U00AC>     /xba         NOT SIGN
 <U007C>     /xbb         VERTICAL LINE
-<U203E>     /xbc         OVERLINE
+<U00AF>     /xbc         MACRON
 <U00A8>     /xbd         DIAERESIS
 <U00B4>     /xbe         ACUTE ACCENT
 <U2017>     /xbf         DOUBLE LOW LINE
diff --git a/localedata/charmaps/IBM277 b/localedata/charmaps/IBM277
index 1c0b5cb9fb..2f6e399210 100644
--- a/localedata/charmaps/IBM277
+++ b/localedata/charmaps/IBM277
@@ -195,7 +195,7 @@ CHARMAP
 <U00BE>     /xb9         VULGAR FRACTION THREE QUARTERS
 <U00AC>     /xba         NOT SIGN
 <U007C>     /xbb         VERTICAL LINE
-<U203E>     /xbc         OVERLINE
+<U00AF>     /xbc         MACRON
 <U00A8>     /xbd         DIAERESIS
 <U00B4>     /xbe         ACUTE ACCENT
 <U00D7>     /xbf         MULTIPLICATION SIGN
diff --git a/localedata/charmaps/IBM278 b/localedata/charmaps/IBM278
index 646961501c..bdfae76210 100644
--- a/localedata/charmaps/IBM278
+++ b/localedata/charmaps/IBM278
@@ -196,7 +196,7 @@ CHARMAP
 <U00BE>     /xb9         VULGAR FRACTION THREE QUARTERS
 <U00AC>     /xba         NOT SIGN
 <U007C>     /xbb         VERTICAL LINE
-<U203E>     /xbc         OVERLINE
+<U00AF>     /xbc         MACRON
 <U00A8>     /xbd         DIAERESIS
 <U00B4>     /xbe         ACUTE ACCENT
 <U00D7>     /xbf         MULTIPLICATION SIGN
diff --git a/localedata/charmaps/IBM280 b/localedata/charmaps/IBM280
index 5de3b3e7b9..4c31242806 100644
--- a/localedata/charmaps/IBM280
+++ b/localedata/charmaps/IBM280
@@ -195,7 +195,7 @@ CHARMAP
 <U00BE>     /xb9         VULGAR FRACTION THREE QUARTERS
 <U00AC>     /xba         NOT SIGN
 <U007C>     /xbb         VERTICAL LINE
-<U203E>     /xbc         OVERLINE
+<U00AF>     /xbc         MACRON
 <U00A8>     /xbd         DIAERESIS
 <U00B4>     /xbe         ACUTE ACCENT
 <U00D7>     /xbf         MULTIPLICATION SIGN
diff --git a/localedata/charmaps/IBM284 b/localedata/charmaps/IBM284
index c64b2a65ab..46a8737a71 100644
--- a/localedata/charmaps/IBM284
+++ b/localedata/charmaps/IBM284
@@ -195,7 +195,7 @@ CHARMAP
 <U00BE>     /xb9         VULGAR FRACTION THREE QUARTERS
 <U005E>     /xba         CIRCUMFLEX ACCENT
 <U0021>     /xbb         EXCLAMATION MARK
-<U203E>     /xbc         OVERLINE
+<U00AF>     /xbc         MACRON
 <U007E>     /xbd         TILDE
 <U00B4>     /xbe         ACUTE ACCENT
 <U00D7>     /xbf         MULTIPLICATION SIGN
diff --git a/localedata/charmaps/IBM297 b/localedata/charmaps/IBM297
index 33b74eee43..14361ad418 100644
--- a/localedata/charmaps/IBM297
+++ b/localedata/charmaps/IBM297
@@ -195,7 +195,7 @@ CHARMAP
 <U00BE>     /xb9         VULGAR FRACTION THREE QUARTERS
 <U00AC>     /xba         NOT SIGN
 <U007C>     /xbb         VERTICAL LINE
-<U203E>     /xbc         OVERLINE
+<U00AF>     /xbc         MACRON
 <U007E>     /xbd         TILDE
 <U00B4>     /xbe         ACUTE ACCENT
 <U00D7>     /xbf         MULTIPLICATION SIGN
diff --git a/localedata/charmaps/IBM424 b/localedata/charmaps/IBM424
index 883e43b8ae..deca11e1b1 100644
--- a/localedata/charmaps/IBM424
+++ b/localedata/charmaps/IBM424
@@ -175,7 +175,7 @@ CHARMAP
 <U00BE>     /xb9         VULGAR FRACTION THREE QUARTERS
 <U005B>     /xba         LEFT SQUARE BRACKET
 <U005D>     /xbb         RIGHT SQUARE BRACKET
-<U203E>     /xbc         OVERLINE
+<U00AF>     /xbc         MACRON
 <U00A8>     /xbd         DIAERESIS
 <U00B4>     /xbe         ACUTE ACCENT
 <U00D7>     /xbf         MULTIPLICATION SIGN