xetex fix from akira for non-bmp characters in filenames with synctex

kberry · kberry · commit a681f4ec1afa · 2025-03-07T22:53:59.000Z
git-svn-id: svn://tug.org/texlive/trunk/Build/source@74504 c570f23f-e606-0410-a88d-b1316a301751
diff --git a/texk/web2c/lib/ChangeLog b/texk/web2c/lib/ChangeLog
@@ -2,6 +2,11 @@
 
 	* TL'25 release.
 
+2025-03-07  Akira Kakuto  <kakuto@jcom.zaq.ne.jp>
+
+	* texmfmp.c (gettexstring) [XETEX]: correct non-BMP characters in
+	filenames with synctex.
+
 2025-02-28  Akira Kakuto  <kakuto@jcom.zaq.ne.jp>
 
 	* texmfmp.c: Remove problematic lines for windows (windows only)
diff --git a/texk/web2c/lib/texmfmp.c b/texk/web2c/lib/texmfmp.c
@@ -3192,7 +3192,7 @@ gettexstring (strnumber s)
     if (c >= 0xD800 && c <= 0xDBFF) {
       unsigned lo = strpool[++i + strstart[s - 65536L]];
       if (lo >= 0xDC00 && lo <= 0xDFFF)
-        c = (c - 0xD800) * 0x0400 + lo - 0xDC00;
+        c = 0x10000 + (c - 0xD800) * 0x0400 + lo - 0xDC00;
       else
         c = 0xFFFD;
     }
diff --git a/texk/web2c/xetexdir/NEWS b/texk/web2c/xetexdir/NEWS
@@ -1,6 +1,8 @@
 ==============================================================
 XeTeX 0.999997 (7 March 2025)
 
+* Unicode characters beyond BMP in filenames also supported with synctex.
+
 Cross-engine changes:
 
 * new primitive \ignoreprimitiveerror, enabled with -etex: if set

Original file line number	Diff line number	Diff line change
`@@ -3192,7 +3192,7 @@ gettexstring (strnumber s)`
`3192`	`3192`	`if (c >= 0xD800 && c <= 0xDBFF) {`
`3193`	`3193`	`unsigned lo = strpool[++i + strstart[s - 65536L]];`
`3194`	`3194`	`if (lo >= 0xDC00 && lo <= 0xDFFF)`
`3195`		`- c = (c - 0xD800) * 0x0400 + lo - 0xDC00;`
	`3195`	`+ c = 0x10000 + (c - 0xD800) * 0x0400 + lo - 0xDC00;`
`3196`	`3196`	`else`
`3197`	`3197`	`c = 0xFFFD;`
`3198`	`3198`	`}`