Patch from Sven Neumann to extend and make consistent the set of

Sat Feb 23 17:34:26 2002  Owen Taylor  <otaylor@redhat.com>

        * modules/basic/basic-{ft2,x,xft}.c: Patch from Sven Neumann
        to extend and make consistent the set of zero-width characters
        that are not displayed. (#71931)

4 files changed, 80 insertions, 4 deletions

diff --git a/modules/basic/basic-fc.c b/modules/basic/basic-fc.c
index 6552a347..0d2ea653 100644
--- a/modules/basic/basic-fc.c
+++ b/modules/basic/basic-fc.c
@@ -26,6 +26,25 @@
 #include "pango-engine.h"
 #include "pango-utils.h"
 
+
+/* Zero Width characters:
+ *
+ *  200B  ZERO WIDTH SPACE
+ *  200C  ZERO WIDTH NON-JOINER
+ *  200D  ZERO WIDTH JOINER
+ *  200E  LEFT-TO-RIGHT MARK
+ *  200F  RIGHT-TO-LEFT MARK
+ *  202A  LEFT-TO-RIGHT EMBEDDING
+ *  202B  RIGHT-TO-LEFT EMBEDDING
+ *  202C  POP DIRECTIONAL FORMATTING
+ *  202D  LEFT-TO-RIGHT OVERRIDE
+ *  202E  RIGHT-TO-LEFT OVERRIDE
+ */
+
+#define ZERO_WIDTH_CHAR(wc)\
+(((wc) >= 0x200B && (wc) <= 0x200F) || ((wc) >= 0x202A && (wc) <= 0x202E))
+
+
 static PangoEngineRange basic_ranges[] = {
   /* Language characters */
   { 0x0380, 0x058f, "*" },
@@ -142,7 +161,7 @@ basic_engine_shape (PangoFont        *font,
 	    input = buf;
 	  }
 
-      if (wc >= 0x200B && wc <= 0x200F)	/* Zero-width characters */
+      if (ZERO_WIDTH_CHAR (wc))
 	{
 	  set_glyph (font, glyphs, i, p - text, 0);
 	}
diff --git a/modules/basic/basic-ft2.c b/modules/basic/basic-ft2.c
index e16a5e29..ffff113f 100644
--- a/modules/basic/basic-ft2.c
+++ b/modules/basic/basic-ft2.c
@@ -29,6 +29,25 @@
 
 #define SCRIPT_ENGINE_NAME "BasicScriptEngineFT2"
 
+
+/* Zero Width characters:
+ *
+ *  200B  ZERO WIDTH SPACE
+ *  200C  ZERO WIDTH NON-JOINER
+ *  200D  ZERO WIDTH JOINER
+ *  200E  LEFT-TO-RIGHT MARK
+ *  200F  RIGHT-TO-LEFT MARK
+ *  202A  LEFT-TO-RIGHT EMBEDDING
+ *  202B  RIGHT-TO-LEFT EMBEDDING
+ *  202C  POP DIRECTIONAL FORMATTING
+ *  202D  LEFT-TO-RIGHT OVERRIDE
+ *  202E  RIGHT-TO-LEFT OVERRIDE
+ */
+
+#define ZERO_WIDTH_CHAR(wc)\
+(((wc) >= 0x200B && (wc) <= 0x200F) || ((wc) >= 0x202A && (wc) <= 0x202E))
+
+
 static PangoEngineRange basic_ranges[] = {
   /* Basic Latin, Latin-1 Supplement, Latin Extended-A, Latin Extended-B,
    * IPA Extensions
@@ -212,7 +231,7 @@ basic_engine_shape (PangoFont        *font,
 	if (pango_get_mirror_char (wc, &mirrored_ch))
 	  wc = mirrored_ch;
 
-      if (wc == 0x200B || wc == 0x200E || wc == 0x200F)	/* Zero-width characters */
+      if (ZERO_WIDTH_CHAR (wc))
 	{
 	  set_glyph (font, glyphs, i, p - text, 0);
 	}
diff --git a/modules/basic/basic-x.c b/modules/basic/basic-x.c
index 1d01f64a..ce49a6cd 100644
--- a/modules/basic/basic-x.c
+++ b/modules/basic/basic-x.c
@@ -25,6 +25,25 @@
 #include "pango-engine.h"
 #include "pango-utils.h"
 
+
+/* Zero Width characters:
+ *
+ *  200B  ZERO WIDTH SPACE
+ *  200C  ZERO WIDTH NON-JOINER
+ *  200D  ZERO WIDTH JOINER
+ *  200E  LEFT-TO-RIGHT MARK
+ *  200F  RIGHT-TO-LEFT MARK
+ *  202A  LEFT-TO-RIGHT EMBEDDING
+ *  202B  RIGHT-TO-LEFT EMBEDDING
+ *  202C  POP DIRECTIONAL FORMATTING
+ *  202D  LEFT-TO-RIGHT OVERRIDE
+ *  202E  RIGHT-TO-LEFT OVERRIDE
+ */
+
+#define ZERO_WIDTH_CHAR(wc)\
+(((wc) >= 0x200B && (wc) <= 0x200F) || ((wc) >= 0x202A && (wc) <= 0x202E))
+
+
 typedef struct _CharRange CharRange;
 typedef struct _Charset Charset;
 typedef struct _CharsetOrdering CharsetOrdering;
@@ -529,7 +548,7 @@ basic_engine_shape (PangoFont        *font,
 	    input = buf;
 	  }
 
-      if (wc == 0x200B || wc == 0x200E || wc == 0x200F)	/* Zero-width characters */
+      if (ZERO_WIDTH_CHAR (wc))
 	{
 	  set_glyph (font, glyphs, i, p - text, 0);
 	}
diff --git a/modules/basic/basic-xft.c b/modules/basic/basic-xft.c
index 6552a347..0d2ea653 100644
--- a/modules/basic/basic-xft.c
+++ b/modules/basic/basic-xft.c
@@ -26,6 +26,25 @@
 #include "pango-engine.h"
 #include "pango-utils.h"
 
+
+/* Zero Width characters:
+ *
+ *  200B  ZERO WIDTH SPACE
+ *  200C  ZERO WIDTH NON-JOINER
+ *  200D  ZERO WIDTH JOINER
+ *  200E  LEFT-TO-RIGHT MARK
+ *  200F  RIGHT-TO-LEFT MARK
+ *  202A  LEFT-TO-RIGHT EMBEDDING
+ *  202B  RIGHT-TO-LEFT EMBEDDING
+ *  202C  POP DIRECTIONAL FORMATTING
+ *  202D  LEFT-TO-RIGHT OVERRIDE
+ *  202E  RIGHT-TO-LEFT OVERRIDE
+ */
+
+#define ZERO_WIDTH_CHAR(wc)\
+(((wc) >= 0x200B && (wc) <= 0x200F) || ((wc) >= 0x202A && (wc) <= 0x202E))
+
+
 static PangoEngineRange basic_ranges[] = {
   /* Language characters */
   { 0x0380, 0x058f, "*" },
@@ -142,7 +161,7 @@ basic_engine_shape (PangoFont        *font,
 	    input = buf;
 	  }
 
-      if (wc >= 0x200B && wc <= 0x200F)	/* Zero-width characters */
+      if (ZERO_WIDTH_CHAR (wc))
 	{
 	  set_glyph (font, glyphs, i, p - text, 0);
 	}