===================================================================
RCS file: /home/cvs/OpenXM_contrib2/asir2000/builtin/strobj.c,v
retrieving revision 1.40
retrieving revision 1.44
diff -u -p -r1.40 -r1.44
--- OpenXM_contrib2/asir2000/builtin/strobj.c	2004/03/11 07:40:41	1.40
+++ OpenXM_contrib2/asir2000/builtin/strobj.c	2004/03/19 01:18:54	1.44
@@ -45,7 +45,7 @@
  * DEVELOPER SHALL HAVE NO LIABILITY IN CONNECTION WITH THE USE,
  * PERFORMANCE OR NON-PERFORMANCE OF THE SOFTWARE.
  *
- * $OpenXM: OpenXM_contrib2/asir2000/builtin/strobj.c,v 1.39 2004/03/11 04:52:17 noro Exp $
+ * $OpenXM: OpenXM_contrib2/asir2000/builtin/strobj.c,v 1.43 2004/03/15 06:44:50 noro Exp $
 */
 #include "ca.h"
 #include "parse.h"
@@ -156,25 +156,26 @@ static struct {
 char *conv_rule(char *name)
 {
 	char *body,*r;
+	int len;
 
 	if ( convfunc )
 		name = call_convfunc(name);
-	if ( conv_flag & CONV_DMODE ) {
-		if ( *name == 'd' ) {
-			body = conv_flag&CONV_SUBS?conv_subs(name+1):symbol_name(name+1);
-			if ( !body ) {
-				r = MALLOC_ATOMIC((strlen(PARTIAL)+1)*sizeof(char));
-				strcpy(r,PARTIAL);
-			} else {
-				r = MALLOC_ATOMIC((strlen(PARTIAL)+strlen(body)+5)
-					*sizeof(char));
-				sprintf(r,strlen(body)==1?"{%s}_%s":"{%s}_{%s}",PARTIAL,body);
-			}
-			return r;
-		} else
-			return conv_flag&CONV_SUBS?conv_subs(name):symbol_name(name);
-	} else 
-		return conv_flag&CONV_SUBS?conv_subs(name):symbol_name(name);
+	if ( conv_flag & CONV_TABLE ) {
+		r = symbol_name(name);
+		if ( r ) return r;
+	}
+	if ( (conv_flag & CONV_DMODE) && *name == 'd' ) {
+		body = conv_rule(name+1);
+		r = MALLOC_ATOMIC((strlen(PARTIAL)+strlen(body)+5)*sizeof(char));
+		if ( !body || !(len=strlen(body)) )
+			strcpy(r,PARTIAL);
+		else if ( len == 1 )
+			sprintf(r,"%s_%s",PARTIAL,body);
+		else
+			sprintf(r,"%s_{%s}",PARTIAL,body);
+		return r;
+	} else
+		return conv_subs(name);
 }
 
 int _is_delimiter(char c)
@@ -192,11 +193,11 @@ int _is_alpha(char c)
 char *conv_subs(char *name)
 {
 	int i,j,k,len,clen,slen,start,level;
-	char *buf,*head,*r,*h,*brace;
+	char *buf,*head,*r,*h,*brace,*buf_conv;
 	char **subs;
 
-	len = strlen(name);
-	if ( !len ) return 0;
+	if ( !name || !(len=strlen(name)) ) return "";
+	if ( !(conv_flag&CONV_SUBS) ) return name;
 	subs = (char **)ALLOCA(len*sizeof(char* ));
 	for ( i = 0, j = 0, start = i; ; j++ ) {
 		while ( (i < len) && _is_delimiter(name[i]) ) i++;
@@ -228,7 +229,8 @@ char *conv_subs(char *name)
 			slen = i-start;	
 			buf = (char *)ALLOCA((slen+1)*sizeof(char));
 			strncpy(buf,name+start,slen); buf[slen] = 0;
-			subs[j] = symbol_name(buf);
+			buf_conv = symbol_name(buf);
+			subs[j] = buf_conv?buf_conv:buf;
 		}
 	}
 	for ( k = 0, clen = 0; k < j; k++ ) clen += strlen(subs[k]);
@@ -334,7 +336,10 @@ int register_conv_rule(Obj arg)
 
 int register_conv_func(Obj arg)
 {
-	if ( OID(arg) == O_P && (int)(VR((P)arg))->attr == V_SR ) {
+	if ( !arg ) {
+		convfunc = 0;
+		return 1;
+	} else if ( OID(arg) == O_P && (int)(VR((P)arg))->attr == V_SR ) {
 		convfunc = (FUNC)(VR((P)arg)->priv);
 		/* f must be a function which takes single argument */
 		return 1;
@@ -408,8 +413,10 @@ void Pquotetotex_env(NODE arg,Obj *rp)
 		*rp = (Obj)l;
 	} else if ( ac == 1 && !ARG0(arg) ) {
 		/* set to default */
-		for ( i = 0; qtot_env[i].name; i++ )
+		for ( i = 0; qtot_env[i].name; i++ ) {
+			(qtot_env[i].reg)(0);
 			qtot_env[i].value = 0;
+		}
 		*rp = 0;
 	} else if ( ac == 1 || ac == 2 ) {
 		asir_assert(ARG0(arg),O_STR,"quotetotex_env");
@@ -776,6 +783,8 @@ char *symbol_name(char *name)
 {
 	int i;
 
+	if ( !name || strlen(name) == 0 )
+		return "";
 	if ( !(conv_flag & CONV_TABLE) )
 		return name;
 
@@ -786,7 +795,7 @@ char *symbol_name(char *name)
 	for ( i = 0; texsymbol[i].text; i++ )
 		if ( !strcmp(texsymbol[i].text,name) )
 			return texsymbol[i].symbol;
-	return name;
+	return 0;
 }
 
 void fnodetotex_tb(FNODE f,TB tb)
@@ -1034,20 +1043,29 @@ void fnodetotex_tb(FNODE f,TB tb)
 					vname_conv = conv_rule(vname);
 				} else {
 					if ( dp_vars_hweyl ) {
-						if ( i < elen2 )
+						if ( i < elen2 ) {
 							strcpy(prefix,dp_vars_prefix?dp_vars_prefix:"x");
-						else if ( i < elen )
+							prefix_conv = conv_rule(prefix);
+							vname_conv = (char *)ALLOCA(strlen(prefix_conv)+50);
+							sprintf(vname_conv,i<10?"%s_%d":"%s_{%d}",
+								prefix_conv,i);
+						} else if ( i < elen ) {
 							strcpy(prefix,"\\partial");
-						else
+							prefix_conv = conv_rule(prefix);
+							vname_conv = (char *)ALLOCA(strlen(prefix_conv)+50);
+							sprintf(vname_conv,i<10?"%s_%d":"%s_{%d}",
+								prefix_conv,i-elen2);
+						} else {
 							strcpy(prefix,"h");
-					} else
+							vname_conv = conv_rule(prefix);
+						}
+					} else {
 						strcpy(prefix,dp_vars_prefix?dp_vars_prefix:"x");
-					prefix_conv = conv_rule(prefix);
-					vname_conv = (char *)ALLOCA(strlen(prefix_conv)+50);
-					if ( i < 10 )
-						sprintf(vname_conv,"%s_%d",prefix_conv,i);
-					else
-						sprintf(vname_conv,"%s_{%d}",prefix_conv,i);
+						prefix_conv = conv_rule(prefix);
+						vname_conv = (char *)ALLOCA(strlen(prefix_conv)+50);
+						sprintf(vname_conv,i<10?"%s_%d":"%s_{%d}",
+							prefix_conv,i);
+					}
 				}
 				if ( fi->id == I_FORMULA && UNIQ(FA0(fi)) ) {
 					len = strlen(vname_conv);
@@ -1082,7 +1100,7 @@ void fnodetotex_tb(FNODE f,TB tb)
 		case I_FORMULA:
 			obj = (Obj)FA0(f);
 			if ( !obj )
-				opname = "0";
+				write_tb("0",tb);
 			else if ( OID(obj) == O_N && NID(obj) == N_C ) {
 				cplx = (C)obj;
 				write_tb("(",tb);