[BRLTTY] Linux screen driver.

[Dave Mielke]

Are you able to test a patch? If so, could you please let me know if the
attached patch (screen-lx1.patch) fixes the charset= parameter?

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diff --git a/Drivers/Screen/Linux/screen.c b/Drivers/Screen/Linux/screen.c
index 255e090bf..1ee51c98c 100644
--- a/Drivers/Screen/Linux/screen.c
+++ b/Drivers/Screen/Linux/screen.c
@@ -1086,25 +1086,29 @@ readScreenRow (int row, size_t size, ScreenCharacter *characters, int *offsets)
       }
     }
 
-    while (vga != end) {
-      if (character) {
-        character->attributes = ((*vga & unshiftedAttributesMask) |
-                                 ((*vga & shiftedAttributesMask) >> 1)) >> 8;
+    while (vga < end) {
+      wint_t wc;
 
-        if (text) {
-          character->text = *text++;
-        } else {
-          uint16_t position = *vga & 0XFF;
-          if (*vga & fontAttributesMask) position |= 0X100;
+      if (text) {
+        wc = *text++;
+      } else {
+        uint16_t position = *vga & 0XFF;
+        if (*vga & fontAttributesMask) position |= 0X100;
+        wc = convertCharacter(&translationTable[position]);
+      }
 
-          wint_t wc = convertCharacter(&translationTable[position]);
-          character->text = (wc != WEOF)? wc: WC_C(' ');
+      if (wc != WEOF) {
+        if (character) {
+          character->attributes = ((*vga & unshiftedAttributesMask) |
+                                   ((*vga & shiftedAttributesMask) >> 1)) >> 8;
+
+          character->text = wc;
+          character += 1;
         }
 
-        character += 1;
+        if (offsets) offsets[column++] = vga - vgaBuffer;
       }
 
-      if (offsets) offsets[column++] = vga - vgaBuffer;
       vga += 1;
     }