From 52b720b66b564af6ee328050f2278cb4fec53fd1 Mon Sep 17 00:00:00 2001
From: Andreas Scherer <andreas_tex@freenet.de>
Date: Wed, 16 Aug 2023 09:45:45 +0000
Subject: [PATCH] [CWEB] Section 36 of COMMON is system-dependent.

git-svn-id: svn://tug.org/texlive/trunk/Build/source@67943 c570f23f-e606-0410-a88d-b1316a301751
---
 texk/web2c/cwebboot.cin        | 330 ++++++++++++++++-----------------
 texk/web2c/cwebdir/ChangeLog   |   6 +
 texk/web2c/cwebdir/comm-w2c.ch |   1 +
 texk/web2c/cwebdir/common.c    | 137 +++++++-------
 texk/web2c/cwebdir/common.w    |   1 +
 5 files changed, 242 insertions(+), 233 deletions(-)

diff --git a/texk/web2c/cwebboot.cin b/texk/web2c/cwebboot.cin
index 79e1b0b9e8..acc31ead5f 100644
--- a/texk/web2c/cwebboot.cin
+++ b/texk/web2c/cwebboot.cin
@@ -26,20 +26,20 @@
 #line 75 "cwebdir/comm-w2c.h"
 
 /*:4*//*91:*/
-#line 738 "cwebdir/comm-w2c.ch"
+#line 739 "cwebdir/comm-w2c.ch"
 
 #if HAVE_GETTEXT
 #include <locale.h>  
 #else
-#line 742 "cwebdir/comm-w2c.ch"
+#line 743 "cwebdir/comm-w2c.ch"
 #define setlocale(a,b) ""
 #define bindtextdomain(a,b) ""
 #define textdomain(a) ""
 #endif
-#line 746 "cwebdir/comm-w2c.ch"
+#line 747 "cwebdir/comm-w2c.ch"
 
 /*:91*//*93:*/
-#line 785 "cwebdir/comm-w2c.ch"
+#line 786 "cwebdir/comm-w2c.ch"
 
 #include <kpathsea/kpathsea.h>  
 
@@ -47,7 +47,7 @@
 #include <lib/lib.h>  
 
 /*:93*//*96:*/
-#line 822 "cwebdir/comm-w2c.ch"
+#line 823 "cwebdir/comm-w2c.ch"
 
 #define CWEB
 #include "help.h" 
@@ -340,7 +340,7 @@ static char change_buffer[buf_size];
 static char*change_limit;
 
 /*:26*//*42:*/
-#line 544 "cwebdir/common.w"
+#line 545 "cwebdir/common.w"
 
 sixteen_bits section_count;
 boolean changed_section[max_sections];
@@ -349,7 +349,7 @@ boolean change_pending;
 boolean print_where= false;
 
 /*:42*//*43:*/
-#line 589 "cwebdir/common.w"
+#line 590 "cwebdir/common.w"
 
 char byte_mem[max_bytes];
 char*byte_mem_end= byte_mem+max_bytes-1;
@@ -357,65 +357,65 @@ name_info name_dir[max_names];
 name_pointer name_dir_end= name_dir+max_names-1;
 
 /*:43*//*44:*/
-#line 600 "cwebdir/common.w"
+#line 601 "cwebdir/common.w"
 
 char*byte_ptr;
 name_pointer name_ptr;
 
 /*:44*//*46:*/
-#line 620 "cwebdir/common.w"
+#line 621 "cwebdir/common.w"
 
 name_pointer hash[hash_size];
 hash_pointer hash_end= hash+hash_size-1;
 hash_pointer h;
 
 /*:46*//*65:*/
-#line 1001 "cwebdir/common.w"
+#line 1002 "cwebdir/common.w"
 
 int history= spotless;
 
 /*:65*//*73:*/
-#line 1124 "cwebdir/common.w"
+#line 1125 "cwebdir/common.w"
 
 int argc;
 char**argv;
 char C_file_name[max_file_name_length];
 char tex_file_name[max_file_name_length];
 char idx_file_name[max_file_name_length];
-#line 453 "cwebdir/comm-w2c.ch"
+#line 454 "cwebdir/comm-w2c.ch"
 char scn_file_name[max_file_name_length];
 char check_file_name[max_file_name_length];
-#line 1131 "cwebdir/common.w"
+#line 1132 "cwebdir/common.w"
 boolean flags[128];
 
 /*:73*//*83:*/
-#line 1265 "cwebdir/common.w"
+#line 1266 "cwebdir/common.w"
 
 FILE*C_file;
 FILE*tex_file;
 FILE*idx_file;
 FILE*scn_file;
-#line 583 "cwebdir/comm-w2c.ch"
+#line 584 "cwebdir/comm-w2c.ch"
 FILE*active_file;
 FILE*check_file;
-#line 1271 "cwebdir/common.w"
+#line 1272 "cwebdir/common.w"
 
-#line 600 "cwebdir/comm-w2c.ch"
+#line 601 "cwebdir/comm-w2c.ch"
 /*:83*//*86:*/
-#line 628 "cwebdir/comm-w2c.ch"
+#line 629 "cwebdir/comm-w2c.ch"
 
 const char*use_language= "";
 
 
 /*:86*//*87:*/
-#line 641 "cwebdir/comm-w2c.ch"
+#line 642 "cwebdir/comm-w2c.ch"
 
 char cb_banner[max_banner];
 string texmf_locale;
 #ifndef SEPARATORS
 #define SEPARATORS "://"
 #endif
-#line 647 "cwebdir/comm-w2c.ch"
+#line 648 "cwebdir/comm-w2c.ch"
  char separators[]= SEPARATORS;
 
 /*:87*/
@@ -472,23 +472,23 @@ static void prime_the_change_buffer(void);
 static void check_change(void);
 
 /*:33*//*55:*/
-#line 762 "cwebdir/common.w"
+#line 763 "cwebdir/common.w"
 
 static int web_strcmp(char*,size_t,char*,size_t);
 static name_pointer add_section_name(name_pointer,int,char*,char*,boolean);
 static void extend_section_name(name_pointer,char*,char*,boolean);
 
 /*:55*//*64:*/
-#line 989 "cwebdir/common.w"
+#line 990 "cwebdir/common.w"
 static int section_name_cmp(char**,size_t,name_pointer);
 
 /*:64*//*76:*/
-#line 1184 "cwebdir/common.w"
+#line 1185 "cwebdir/common.w"
 static void scan_args(void);
 
-#line 513 "cwebdir/comm-w2c.ch"
+#line 514 "cwebdir/comm-w2c.ch"
 /*:76*//*98:*/
-#line 835 "cwebdir/comm-w2c.ch"
+#line 836 "cwebdir/comm-w2c.ch"
 
 static void cb_usage(const_string str);
 static void cb_usagehelp(const_string*message);
@@ -505,7 +505,7 @@ common_init(void)
 {
 #line 78 "cwebdir/comm-w2c.ch"
 /*45:*/
-#line 604 "cwebdir/common.w"
+#line 605 "cwebdir/common.w"
 
 name_dir->byte_start= byte_ptr= byte_mem;
 name_ptr= name_dir+1;
@@ -513,7 +513,7 @@ name_ptr->byte_start= byte_mem;
 root= NULL;
 
 /*:45*//*47:*/
-#line 627 "cwebdir/common.w"
+#line 628 "cwebdir/common.w"
 
 for(h= hash;h<=hash_end;*h++= NULL);
 
@@ -521,7 +521,7 @@ for(h= hash;h<=hash_end;*h++= NULL);
 #line 78 "cwebdir/comm-w2c.ch"
 
 /*94:*/
-#line 797 "cwebdir/comm-w2c.ch"
+#line 798 "cwebdir/comm-w2c.ch"
 
 kpse_set_program_name(argv[0],"cweb");
 
@@ -530,7 +530,7 @@ kpse_set_program_name(argv[0],"cweb");
 
 #line 85 "cwebdir/comm-w2c.ch"
 /*92:*/
-#line 747 "cwebdir/comm-w2c.ch"
+#line 748 "cwebdir/comm-w2c.ch"
 
 setlocale(LC_MESSAGES,setlocale(LC_CTYPE,""));
 texmf_locale= kpse_var_expand("${TEXMFLOCALEDIR}");
@@ -549,23 +549,23 @@ textdomain("cweb");
 #line 85 "cwebdir/comm-w2c.ch"
 
 /*74:*/
-#line 1137 "cwebdir/common.w"
+#line 1138 "cwebdir/common.w"
 
-#line 460 "cwebdir/comm-w2c.ch"
+#line 461 "cwebdir/comm-w2c.ch"
 make_xrefs= true;
-#line 1139 "cwebdir/common.w"
+#line 1140 "cwebdir/common.w"
 
 /*:74*/
 #line 86 "cwebdir/comm-w2c.ch"
 
 #line 101 "cwebdir/common.w"
 /*84:*/
-#line 600 "cwebdir/comm-w2c.ch"
+#line 601 "cwebdir/comm-w2c.ch"
 
 scan_args();
 if(program==ctangle){
 if(check_for_change)/*88:*/
-#line 658 "cwebdir/comm-w2c.ch"
+#line 659 "cwebdir/comm-w2c.ch"
 {
 if((C_file= fopen(C_file_name,"a"))==NULL)
 fatal(_("! Cannot open output file "),C_file_name);
@@ -582,7 +582,7 @@ fatal(_("! Cannot open output file "),check_file_name);
 }
 
 /*:88*/
-#line 603 "cwebdir/comm-w2c.ch"
+#line 604 "cwebdir/comm-w2c.ch"
 
 else if((C_file= fopen(C_file_name,"wb"))==NULL)
 fatal(_("! Cannot open output file "),C_file_name);
@@ -590,7 +590,7 @@ fatal(_("! Cannot open output file "),C_file_name);
 }
 else{
 if(check_for_change)/*89:*/
-#line 673 "cwebdir/comm-w2c.ch"
+#line 674 "cwebdir/comm-w2c.ch"
 {
 if((tex_file= fopen(tex_file_name,"a"))==NULL)
 fatal(_("! Cannot open output file "),tex_file_name);
@@ -607,14 +607,14 @@ fatal(_("! Cannot open output file "),check_file_name);
 }
 
 /*:89*/
-#line 609 "cwebdir/comm-w2c.ch"
+#line 610 "cwebdir/comm-w2c.ch"
 
 else if((tex_file= fopen(tex_file_name,"wb"))==NULL)
 fatal(_("! Cannot open output file "),tex_file_name);
 }
-#line 1283 "cwebdir/common.w"
+#line 1284 "cwebdir/common.w"
 
-#line 618 "cwebdir/comm-w2c.ch"
+#line 619 "cwebdir/comm-w2c.ch"
 /*:84*/
 #line 101 "cwebdir/common.w"
 
@@ -786,13 +786,13 @@ boolean get_line(void)
 restart:
 if(changing&&include_depth==change_depth)
 /*38:*/
-#line 469 "cwebdir/common.w"
+#line 470 "cwebdir/common.w"
 {
 change_line++;
 if(!input_ln(change_file)){
-#line 239 "cwebdir/comm-w2c.ch"
+#line 240 "cwebdir/comm-w2c.ch"
 err_print(_("! Change file ended without @z"));
-#line 473 "cwebdir/common.w"
+#line 474 "cwebdir/common.w"
 
 buffer[0]= '@';buffer[1]= 'z';limit= buffer+2;
 }
@@ -808,9 +808,9 @@ if(buffer[0]=='@'){
 if(xisupper(buffer[1]))buffer[1]= tolower((int)buffer[1]);
 if(buffer[1]=='x'||buffer[1]=='y'){
 loc= buffer+2;
-#line 245 "cwebdir/comm-w2c.ch"
+#line 246 "cwebdir/comm-w2c.ch"
 err_print(_("! Where is the matching @z?"));
-#line 489 "cwebdir/common.w"
+#line 490 "cwebdir/common.w"
 
 }
 else if(buffer[1]=='z'){
@@ -825,7 +825,7 @@ prime_the_change_buffer();changing= !changing;print_where= true;
 
 if(!changing||include_depth> change_depth){
 /*37:*/
-#line 452 "cwebdir/common.w"
+#line 453 "cwebdir/common.w"
 {
 cur_line++;
 while(!input_ln(cur_file)){
@@ -899,9 +899,9 @@ free(found_filename);
 cur_line= 0;print_where= true;
 goto restart;
 }
-#line 233 "cwebdir/comm-w2c.ch"
+#line 234 "cwebdir/comm-w2c.ch"
 include_depth--;err_print(_("! Cannot open include file"));goto restart;
-#line 450 "cwebdir/common.w"
+#line 451 "cwebdir/common.w"
 }
 
 /*:36*/
@@ -913,7 +913,7 @@ return true;
 
 #line 167 "cwebdir/comm-w2c.ch"
 /*:35*//*39:*/
-#line 501 "cwebdir/common.w"
+#line 502 "cwebdir/common.w"
 
 void
 check_complete(void){
@@ -921,24 +921,24 @@ if(change_limit!=change_buffer){
 strncpy(buffer,change_buffer,(size_t)(change_limit-change_buffer+1));
 limit= buffer+(ptrdiff_t)(change_limit-change_buffer);
 changing= true;change_depth= include_depth;loc= buffer;
-#line 251 "cwebdir/comm-w2c.ch"
+#line 252 "cwebdir/comm-w2c.ch"
 err_print(_("! Change file entry did not match"));
-#line 509 "cwebdir/common.w"
+#line 510 "cwebdir/common.w"
 
 }
 }
 
 /*:39*//*40:*/
-#line 517 "cwebdir/common.w"
+#line 518 "cwebdir/common.w"
 
 void
 reset_input(void)
 {
 limit= buffer;loc= buffer+1;buffer[0]= ' ';
 /*41:*/
-#line 532 "cwebdir/common.w"
+#line 533 "cwebdir/common.w"
 
-#line 261 "cwebdir/comm-w2c.ch"
+#line 262 "cwebdir/comm-w2c.ch"
 if((found_filename= kpse_find_cweb(web_file_name))==NULL
 ||(web_file= fopen(found_filename,"r"))==NULL)
 fatal(_("! Cannot open input file "),web_file_name);
@@ -949,11 +949,11 @@ strcpy(web_file_name,found_filename+
 ((strncmp(found_filename,"./",2)==0)?2:0));
 free(found_filename);
 }else fatal(_("! Filename too long\n"),found_filename);
-#line 538 "cwebdir/common.w"
+#line 539 "cwebdir/common.w"
 
 
 web_file_open= true;
-#line 277 "cwebdir/comm-w2c.ch"
+#line 278 "cwebdir/comm-w2c.ch"
 if((found_filename= kpse_find_cweb(change_file_name))==NULL
 ||(change_file= fopen(found_filename,"r"))==NULL)
 fatal(_("! Cannot open change file "),change_file_name);
@@ -964,10 +964,10 @@ strcpy(change_file_name,found_filename+
 ((strncmp(found_filename,"./",2)==0)?2:0));
 free(found_filename);
 }else fatal(_("! Filename too long\n"),found_filename);
-#line 543 "cwebdir/common.w"
+#line 544 "cwebdir/common.w"
 
 /*:41*/
-#line 522 "cwebdir/common.w"
+#line 523 "cwebdir/common.w"
 
 include_depth= cur_line= change_line= 0;
 change_depth= include_depth;
@@ -976,7 +976,7 @@ limit= buffer;loc= buffer+1;buffer[0]= ' ';input_has_ended= false;
 }
 
 /*:40*//*48:*/
-#line 632 "cwebdir/common.w"
+#line 633 "cwebdir/common.w"
 
 name_pointer
 id_lookup(
@@ -991,17 +991,17 @@ name_pointer p;
 if(last==NULL)for(last= first;*last!='\0';last++);
 l= (size_t)(last-first);
 /*49:*/
-#line 655 "cwebdir/common.w"
+#line 656 "cwebdir/common.w"
 
 h= (int)((eight_bits)*i);
 while(++i<last)h= (h+h+(int)((eight_bits)*i))%hash_size;
 
 
 /*:49*/
-#line 645 "cwebdir/common.w"
+#line 646 "cwebdir/common.w"
 
 /*50:*/
-#line 663 "cwebdir/common.w"
+#line 664 "cwebdir/common.w"
 
 p= hash[h];
 while(p&&!names_match(p,first,l,t))p= p->link;
@@ -1011,30 +1011,30 @@ p->link= hash[h];hash[h]= p;
 }
 
 /*:50*/
-#line 646 "cwebdir/common.w"
+#line 647 "cwebdir/common.w"
 
 if(p==name_ptr)/*51:*/
-#line 674 "cwebdir/common.w"
+#line 675 "cwebdir/common.w"
 {
-#line 299 "cwebdir/comm-w2c.ch"
+#line 300 "cwebdir/comm-w2c.ch"
 if(byte_ptr+l> byte_mem_end)overflow(_("byte memory"));
 if(name_ptr>=name_dir_end)overflow(_("name"));
-#line 677 "cwebdir/common.w"
+#line 678 "cwebdir/common.w"
 strncpy(byte_ptr,first,l);
 (++name_ptr)->byte_start= byte_ptr+= l;
-#line 306 "cwebdir/comm-w2c.ch"
+#line 307 "cwebdir/comm-w2c.ch"
 if(program!=ctangle)p->ilk= t,init_node(p);
-#line 680 "cwebdir/common.w"
+#line 681 "cwebdir/common.w"
 }
 
 /*:51*/
-#line 647 "cwebdir/common.w"
+#line 648 "cwebdir/common.w"
 
 return p;
 }
 
 /*:48*//*52:*/
-#line 706 "cwebdir/common.w"
+#line 707 "cwebdir/common.w"
 
 void
 print_section_name(
@@ -1053,7 +1053,7 @@ if(q)term_write("...",3);
 }
 
 /*:52*//*53:*/
-#line 723 "cwebdir/common.w"
+#line 724 "cwebdir/common.w"
 
 void
 sprint_section_name(
@@ -1073,7 +1073,7 @@ s= p->byte_start;
 }
 
 /*:53*//*54:*/
-#line 741 "cwebdir/common.w"
+#line 742 "cwebdir/common.w"
 
 void
 print_prefix_name(
@@ -1086,7 +1086,7 @@ if(s+l<(p+1)->byte_start)term_write("...",3);
 }
 
 /*:54*//*56:*/
-#line 767 "cwebdir/common.w"
+#line 768 "cwebdir/common.w"
 
 static int web_strcmp(
 char*j,
@@ -1104,7 +1104,7 @@ else return greater;
 }
 
 /*:56*//*57:*/
-#line 796 "cwebdir/common.w"
+#line 797 "cwebdir/common.w"
 
 static name_pointer
 add_section_name(
@@ -1117,10 +1117,10 @@ boolean ispref)
 name_pointer p= name_ptr;
 char*s= first_chunk(p);
 size_t name_len= (size_t)(last-first+(int)ispref);
-#line 313 "cwebdir/comm-w2c.ch"
+#line 314 "cwebdir/comm-w2c.ch"
 if(s+name_len> byte_mem_end)overflow(_("byte memory"));
 if(name_ptr+1>=name_dir_end)overflow(_("name"));
-#line 810 "cwebdir/common.w"
+#line 811 "cwebdir/common.w"
 (++name_ptr)->byte_start= byte_ptr= s+name_len;
 if(ispref){
 *(byte_ptr-1)= ' ';
@@ -1136,7 +1136,7 @@ return par==NULL?(root= p):c==less?(par->llink= p):(par->rlink= p);
 }
 
 /*:57*//*58:*/
-#line 824 "cwebdir/common.w"
+#line 825 "cwebdir/common.w"
 
 static void
 extend_section_name(
@@ -1148,23 +1148,23 @@ boolean ispref)
 char*s;
 name_pointer q= p+1;
 size_t name_len= (size_t)(last-first+(int)ispref);
-#line 320 "cwebdir/comm-w2c.ch"
+#line 321 "cwebdir/comm-w2c.ch"
 if(name_ptr>=name_dir_end)overflow(_("name"));
-#line 836 "cwebdir/common.w"
+#line 837 "cwebdir/common.w"
 while(q->link!=name_dir)q= q->link;
 q->link= name_ptr;
 s= name_ptr->byte_start;
 name_ptr->link= name_dir;
-#line 326 "cwebdir/comm-w2c.ch"
+#line 327 "cwebdir/comm-w2c.ch"
 if(s+name_len> byte_mem_end)overflow(_("byte memory"));
-#line 841 "cwebdir/common.w"
+#line 842 "cwebdir/common.w"
 (++name_ptr)->byte_start= byte_ptr= s+name_len;
 strncpy(s,first,name_len);
 if(ispref)*(byte_ptr-1)= ' ';
 }
 
 /*:58*//*59:*/
-#line 852 "cwebdir/common.w"
+#line 853 "cwebdir/common.w"
 
 name_pointer
 section_lookup(
@@ -1179,7 +1179,7 @@ name_pointer par= NULL;
 
 size_t name_len= (size_t)(last-first+1);
 /*60:*/
-#line 876 "cwebdir/common.w"
+#line 877 "cwebdir/common.w"
 
 while(p){
 c= web_strcmp(first,name_len,first_chunk(p),prefix_length(p));
@@ -1189,14 +1189,14 @@ par= p;
 p= (c==less?p->llink:p->rlink);
 }else{
 if(r!=NULL){
-#line 332 "cwebdir/comm-w2c.ch"
+#line 333 "cwebdir/comm-w2c.ch"
 fputs(_("\n! Ambiguous prefix: matches <"),stdout);
-#line 886 "cwebdir/common.w"
+#line 887 "cwebdir/common.w"
 
 print_prefix_name(p);
-#line 338 "cwebdir/comm-w2c.ch"
+#line 339 "cwebdir/comm-w2c.ch"
 fputs(_(">\n and <"),stdout);
-#line 889 "cwebdir/common.w"
+#line 890 "cwebdir/common.w"
 print_prefix_name(r);
 err_print(">");
 return name_dir;
@@ -1210,27 +1210,27 @@ p= q,q= NULL;
 }
 
 /*:60*/
-#line 866 "cwebdir/common.w"
+#line 867 "cwebdir/common.w"
 
 /*61:*/
-#line 901 "cwebdir/common.w"
+#line 902 "cwebdir/common.w"
 
 if(r==NULL)
 return add_section_name(par,c,first,last+1,ispref);
 
 /*:61*/
-#line 867 "cwebdir/common.w"
+#line 868 "cwebdir/common.w"
 
 /*62:*/
-#line 909 "cwebdir/common.w"
+#line 910 "cwebdir/common.w"
 
 switch(section_name_cmp(&first,name_len,r)){
 
 case prefix:
 if(!ispref){
-#line 344 "cwebdir/comm-w2c.ch"
+#line 345 "cwebdir/comm-w2c.ch"
 fputs(_("\n! New name is a prefix of <"),stdout);
-#line 915 "cwebdir/common.w"
+#line 916 "cwebdir/common.w"
 
 print_section_name(r);
 err_print(">");
@@ -1242,34 +1242,34 @@ case extension:if(!ispref||first<=last)
 extend_section_name(r,first,last+1,ispref);
 break;
 case bad_extension:
-#line 350 "cwebdir/comm-w2c.ch"
+#line 351 "cwebdir/comm-w2c.ch"
 fputs(_("\n! New name extends <"),stdout);
-#line 927 "cwebdir/common.w"
+#line 928 "cwebdir/common.w"
 
 print_section_name(r);
 err_print(">");
 break;
 default:
-#line 356 "cwebdir/comm-w2c.ch"
+#line 357 "cwebdir/comm-w2c.ch"
 fputs(_("\n! Section name incompatible with <"),stdout);
-#line 933 "cwebdir/common.w"
+#line 934 "cwebdir/common.w"
 
 print_prefix_name(r);
-#line 362 "cwebdir/comm-w2c.ch"
+#line 363 "cwebdir/comm-w2c.ch"
 fputs(_(">,\n which abbreviates <"),stdout);
-#line 936 "cwebdir/common.w"
+#line 937 "cwebdir/common.w"
 print_section_name(r);
 err_print(">");
 }
 return r;
 
 /*:62*/
-#line 868 "cwebdir/common.w"
+#line 869 "cwebdir/common.w"
 
 }
 
 /*:59*//*63:*/
-#line 957 "cwebdir/common.w"
+#line 958 "cwebdir/common.w"
 
 static int section_name_cmp(
 char**pfirst,
@@ -1303,7 +1303,7 @@ default:return c;
 }
 
 /*:63*//*66:*/
-#line 1011 "cwebdir/common.w"
+#line 1012 "cwebdir/common.w"
 
 void
 err_print(
@@ -1311,15 +1311,15 @@ const char*s)
 {
 *s=='!'?printf("\n%s",s):printf("%s",s);
 if(web_file_open)/*67:*/
-#line 1030 "cwebdir/common.w"
+#line 1031 "cwebdir/common.w"
 
 {char*k,*l;
 if(changing&&include_depth==change_depth)
-#line 370 "cwebdir/comm-w2c.ch"
+#line 371 "cwebdir/comm-w2c.ch"
 printf(_(". (l. %d of change file)\n"),change_line);
 else if(include_depth==0)printf(_(". (l. %d)\n"),cur_line);
 else printf(_(". (l. %d of include file %s)\n"),cur_line,cur_file_name);
-#line 1036 "cwebdir/common.w"
+#line 1037 "cwebdir/common.w"
 l= (loc>=limit?limit:loc);
 if(l> buffer){
 for(k= buffer;k<l;k++)
@@ -1334,24 +1334,24 @@ putchar(' ');
 }
 
 /*:67*/
-#line 1017 "cwebdir/common.w"
+#line 1018 "cwebdir/common.w"
 
 update_terminal();mark_error();
 }
 
 /*:66*//*68:*/
-#line 1063 "cwebdir/common.w"
+#line 1064 "cwebdir/common.w"
 
 int wrap_up(void){
 if(show_progress)new_line();
 if(show_stats)
 print_stats();
-#line 400 "cwebdir/comm-w2c.ch"
+#line 401 "cwebdir/comm-w2c.ch"
 /*69:*/
-#line 1073 "cwebdir/common.w"
+#line 1074 "cwebdir/common.w"
 
 switch(history){
-#line 426 "cwebdir/comm-w2c.ch"
+#line 427 "cwebdir/comm-w2c.ch"
 case spotless:
 if(show_happiness)puts(_("(No errors were found.)"));break;
 case harmless_message:
@@ -1360,14 +1360,14 @@ case error_message:
 puts(_("(Pardon me, but I think I spotted something wrong.)"));break;
 case fatal_message:default:
 puts(_("(That was a fatal error, my friend.)"));
-#line 1083 "cwebdir/common.w"
+#line 1084 "cwebdir/common.w"
 }
 
 /*:69*/
-#line 400 "cwebdir/comm-w2c.ch"
+#line 401 "cwebdir/comm-w2c.ch"
 
 /*90:*/
-#line 691 "cwebdir/comm-w2c.ch"
+#line 692 "cwebdir/comm-w2c.ch"
 
 if(C_file)fclose(C_file);
 if(tex_file)fclose(tex_file);
@@ -1376,20 +1376,20 @@ if(strlen(check_file_name))
 remove(check_file_name);
 
 /*:90*/
-#line 401 "cwebdir/comm-w2c.ch"
+#line 402 "cwebdir/comm-w2c.ch"
 
-#line 408 "cwebdir/comm-w2c.ch"
+#line 409 "cwebdir/comm-w2c.ch"
 switch(history){
 case spotless:return RETURN_OK;
 case harmless_message:return RETURN_WARN;
 case error_message:return RETURN_ERROR;
 case fatal_message:default:return RETURN_FAIL;
 }
-#line 1071 "cwebdir/common.w"
+#line 1072 "cwebdir/common.w"
 }
 
 /*:68*//*70:*/
-#line 1091 "cwebdir/common.w"
+#line 1092 "cwebdir/common.w"
 void
 fatal(
 const char*s,const char*t)
@@ -1400,19 +1400,19 @@ history= fatal_message;exit(wrap_up());
 }
 
 /*:70*//*71:*/
-#line 1102 "cwebdir/common.w"
+#line 1103 "cwebdir/common.w"
 void
 overflow(
 const char*t)
 {
-#line 439 "cwebdir/comm-w2c.ch"
+#line 440 "cwebdir/comm-w2c.ch"
 printf(_("\n! Sorry, %s capacity exceeded"),t);fatal("","");
-#line 1107 "cwebdir/common.w"
+#line 1108 "cwebdir/common.w"
 }
 
 
 /*:71*//*75:*/
-#line 1155 "cwebdir/common.w"
+#line 1156 "cwebdir/common.w"
 
 static void
 scan_args(void)
@@ -1423,41 +1423,41 @@ char*s;
 boolean found_web= false,found_change= false,found_out= false;
 
 
-#line 483 "cwebdir/comm-w2c.ch"
+#line 484 "cwebdir/comm-w2c.ch"
 strcpy(change_file_name,"/dev/null");
 #if defined DEV_NULL
 strncpy(change_file_name,DEV_NULL,max_file_name_length-2);
 change_file_name[max_file_name_length-2]= '\0';
 #elif defined _DEV_NULL
-#line 488 "cwebdir/comm-w2c.ch"
+#line 489 "cwebdir/comm-w2c.ch"
  strncpy(change_file_name,_DEV_NULL,max_file_name_length-2);
 change_file_name[max_file_name_length-2]= '\0';
 #endif
-#line 491 "cwebdir/comm-w2c.ch"
+#line 492 "cwebdir/comm-w2c.ch"
 
-#line 1166 "cwebdir/common.w"
+#line 1167 "cwebdir/common.w"
  while(--argc> 0){
 if((**(++argv)=='-'||**argv=='+')&&*(*argv+1))/*80:*/
-#line 1243 "cwebdir/common.w"
+#line 1244 "cwebdir/common.w"
 
-#line 526 "cwebdir/comm-w2c.ch"
+#line 527 "cwebdir/comm-w2c.ch"
 {
 if(strcmp("-help",*argv)==0||strcmp("--help",*argv)==0)
 
 /*97:*/
-#line 826 "cwebdir/comm-w2c.ch"
+#line 827 "cwebdir/comm-w2c.ch"
 
 cb_usagehelp(program==ctangle?CTANGLEHELP:
 program==cweave?CWEAVEHELP:CTWILLHELP);
 
 
 /*:97*/
-#line 529 "cwebdir/comm-w2c.ch"
+#line 530 "cwebdir/comm-w2c.ch"
 
 if(strcmp("-version",*argv)==0||strcmp("--version",*argv)==0)
 
 /*100:*/
-#line 872 "cwebdir/comm-w2c.ch"
+#line 873 "cwebdir/comm-w2c.ch"
 
 printversionandexit(cb_banner,
 program==ctwill?"Donald E. Knuth":"Silvio Levy and Donald E. Knuth",
@@ -1465,7 +1465,7 @@ NULL,"Contemporary development on https://github.com/ascherer/cweb.\n");
 
 
 /*:100*/
-#line 532 "cwebdir/comm-w2c.ch"
+#line 533 "cwebdir/comm-w2c.ch"
 
 if(strcmp("-verbose",*argv)==0||strcmp("--verbose",*argv)==0)
 
@@ -1479,15 +1479,15 @@ case'v':show_banner= show_progress= show_happiness= true;continue;
 case'q':show_banner= show_progress= show_happiness= false;continue;
 case'd':
 if(sscanf(++dot_pos,"%u",&kpathsea_debug)!=1)/*81:*/
-#line 569 "cwebdir/comm-w2c.ch"
+#line 570 "cwebdir/comm-w2c.ch"
 
 cb_usage(program==ctangle?"ctangle":program==cweave?"cweave":"ctwill");
 
-#line 1258 "cwebdir/common.w"
+#line 1259 "cwebdir/common.w"
 
-#line 577 "cwebdir/comm-w2c.ch"
+#line 578 "cwebdir/comm-w2c.ch"
 /*:81*/
-#line 544 "cwebdir/comm-w2c.ch"
+#line 545 "cwebdir/comm-w2c.ch"
 
 while(isdigit(*dot_pos))dot_pos++;
 dot_pos--;
@@ -1498,35 +1498,35 @@ default:flags[(eight_bits)*dot_pos]= flag_change;continue;
 break;
 }
 }
-#line 1246 "cwebdir/common.w"
+#line 1247 "cwebdir/common.w"
 
-#line 569 "cwebdir/comm-w2c.ch"
+#line 570 "cwebdir/comm-w2c.ch"
 /*:80*/
-#line 1167 "cwebdir/common.w"
+#line 1168 "cwebdir/common.w"
 
 else{
 s= name_pos= *argv;dot_pos= NULL;
-#line 500 "cwebdir/comm-w2c.ch"
+#line 501 "cwebdir/comm-w2c.ch"
 while(*s)
 if(*s=='.')dot_pos= s++;
 else if(*s==DIR_SEPARATOR||*s==DEVICE_SEPARATOR||*s=='/')
 dot_pos= NULL,name_pos= ++s;
 else s++;
 
-#line 1174 "cwebdir/common.w"
+#line 1175 "cwebdir/common.w"
 if(!found_web)/*77:*/
-#line 1193 "cwebdir/common.w"
+#line 1194 "cwebdir/common.w"
 
 {
 if(s-*argv> max_file_name_length-5)
 /*82:*/
-#line 577 "cwebdir/comm-w2c.ch"
+#line 578 "cwebdir/comm-w2c.ch"
 fatal(_("! Filename too long\n"),*argv);
-#line 1260 "cwebdir/common.w"
+#line 1261 "cwebdir/common.w"
 
 
 /*:82*/
-#line 1196 "cwebdir/common.w"
+#line 1197 "cwebdir/common.w"
 
 if(dot_pos==NULL)
 sprintf(web_file_name,"%s.w",*argv);
@@ -1534,7 +1534,7 @@ else{
 strcpy(web_file_name,*argv);
 *dot_pos= '\0';
 }
-#line 1204 "cwebdir/common.w"
+#line 1205 "cwebdir/common.w"
 sprintf(tex_file_name,"%s.tex",name_pos);
 sprintf(idx_file_name,"%s.idx",name_pos);
 sprintf(scn_file_name,"%s.scn",name_pos);
@@ -1543,22 +1543,22 @@ found_web= true;
 }
 
 /*:77*/
-#line 1175 "cwebdir/common.w"
+#line 1176 "cwebdir/common.w"
 
 else if(!found_change)/*78:*/
-#line 1211 "cwebdir/common.w"
+#line 1212 "cwebdir/common.w"
 
 {
 if(strcmp(*argv,"-")!=0){
 if(s-*argv> max_file_name_length-4)
 /*82:*/
-#line 577 "cwebdir/comm-w2c.ch"
+#line 578 "cwebdir/comm-w2c.ch"
 fatal(_("! Filename too long\n"),*argv);
-#line 1260 "cwebdir/common.w"
+#line 1261 "cwebdir/common.w"
 
 
 /*:82*/
-#line 1215 "cwebdir/common.w"
+#line 1216 "cwebdir/common.w"
 
 if(dot_pos==NULL)
 sprintf(change_file_name,"%s.ch",*argv);
@@ -1568,21 +1568,21 @@ found_change= true;
 }
 
 /*:78*/
-#line 1176 "cwebdir/common.w"
+#line 1177 "cwebdir/common.w"
 
 else if(!found_out)/*79:*/
-#line 1223 "cwebdir/common.w"
+#line 1224 "cwebdir/common.w"
 
 {
 if(s-*argv> max_file_name_length-5)
 /*82:*/
-#line 577 "cwebdir/comm-w2c.ch"
+#line 578 "cwebdir/comm-w2c.ch"
 fatal(_("! Filename too long\n"),*argv);
-#line 1260 "cwebdir/common.w"
+#line 1261 "cwebdir/common.w"
 
 
 /*:82*/
-#line 1226 "cwebdir/common.w"
+#line 1227 "cwebdir/common.w"
 
 if(dot_pos==NULL){
 sprintf(tex_file_name,"%s.tex",*argv);
@@ -1600,36 +1600,36 @@ found_out= true;
 }
 
 /*:79*/
-#line 1177 "cwebdir/common.w"
+#line 1178 "cwebdir/common.w"
 
 else/*81:*/
-#line 569 "cwebdir/comm-w2c.ch"
+#line 570 "cwebdir/comm-w2c.ch"
 
 cb_usage(program==ctangle?"ctangle":program==cweave?"cweave":"ctwill");
 
-#line 1258 "cwebdir/common.w"
+#line 1259 "cwebdir/common.w"
 
-#line 577 "cwebdir/comm-w2c.ch"
+#line 578 "cwebdir/comm-w2c.ch"
 /*:81*/
-#line 1178 "cwebdir/common.w"
+#line 1179 "cwebdir/common.w"
 
 }
 }
 if(!found_web)/*81:*/
-#line 569 "cwebdir/comm-w2c.ch"
+#line 570 "cwebdir/comm-w2c.ch"
 
 cb_usage(program==ctangle?"ctangle":program==cweave?"cweave":"ctwill");
 
-#line 1258 "cwebdir/common.w"
+#line 1259 "cwebdir/common.w"
 
-#line 577 "cwebdir/comm-w2c.ch"
+#line 578 "cwebdir/comm-w2c.ch"
 /*:81*/
-#line 1181 "cwebdir/common.w"
+#line 1182 "cwebdir/common.w"
 
 }
 
 /*:75*//*99:*/
-#line 839 "cwebdir/comm-w2c.ch"
+#line 840 "cwebdir/comm-w2c.ch"
 
 static void cb_usage(const_string str)
 {
@@ -1661,7 +1661,7 @@ history= spotless;exit(wrap_up());
 }
 
 /*:99*//*101:*/
-#line 880 "cwebdir/comm-w2c.ch"
+#line 881 "cwebdir/comm-w2c.ch"
 
 void cb_show_banner(void)
 {
diff --git a/texk/web2c/cwebdir/ChangeLog b/texk/web2c/cwebdir/ChangeLog
index 9a2108a91e..dca3f68410 100644
--- a/texk/web2c/cwebdir/ChangeLog
+++ b/texk/web2c/cwebdir/ChangeLog
@@ -1,3 +1,9 @@
+2023-08-16  Andreas Scherer  <https://ascherer.github.io>
+
+	* comm-w2c.ch,
+	* common.c,
+	* common.w: Section 36 of COMMON is system-dependent.
+
 2023-08-13  Andreas Scherer  <https://ascherer.github.io>
 
 	* comm-w2c.h,
diff --git a/texk/web2c/cwebdir/comm-w2c.ch b/texk/web2c/cwebdir/comm-w2c.ch
index 76721f5701..a14240a22a 100644
--- a/texk/web2c/cwebdir/comm-w2c.ch
+++ b/texk/web2c/cwebdir/comm-w2c.ch
@@ -223,6 +223,7 @@ The remainder of the \.{@@i} line after the file name is ignored.
     for (; k>=cur_file_name; k--) *(k+l+1)=*k;
     strcpy(cur_file_name,temp_file_name);
     cur_file_name[l]='/'; /* \UNIX/ pathname separator */
+@^system dependencies@>
     if ((cur_file=fopen(cur_file_name,"r"))!=NULL) {
       cur_line=0; print_where=true;
       goto restart; /* success */
diff --git a/texk/web2c/cwebdir/common.c b/texk/web2c/cwebdir/common.c
index 2f43a1278d..ccedc5e914 100644
--- a/texk/web2c/cwebdir/common.c
+++ b/texk/web2c/cwebdir/common.c
@@ -277,7 +277,7 @@ static char change_buffer[buf_size];
 static char*change_limit;
 
 /*:26*//*42:*/
-#line 544 "common.w"
+#line 545 "common.w"
 
 sixteen_bits section_count;
 boolean changed_section[max_sections];
@@ -286,7 +286,7 @@ boolean change_pending;
 boolean print_where= false;
 
 /*:42*//*43:*/
-#line 589 "common.w"
+#line 590 "common.w"
 
 char byte_mem[max_bytes];
 char*byte_mem_end= byte_mem+max_bytes-1;
@@ -294,25 +294,25 @@ name_info name_dir[max_names];
 name_pointer name_dir_end= name_dir+max_names-1;
 
 /*:43*//*44:*/
-#line 600 "common.w"
+#line 601 "common.w"
 
 char*byte_ptr;
 name_pointer name_ptr;
 
 /*:44*//*46:*/
-#line 620 "common.w"
+#line 621 "common.w"
 
 name_pointer hash[hash_size];
 hash_pointer hash_end= hash+hash_size-1;
 hash_pointer h;
 
 /*:46*//*65:*/
-#line 1001 "common.w"
+#line 1002 "common.w"
 
 int history= spotless;
 
 /*:65*//*73:*/
-#line 1124 "common.w"
+#line 1125 "common.w"
 
 int argc;
 char**argv;
@@ -323,7 +323,7 @@ char scn_file_name[max_file_name_length];
 boolean flags[128];
 
 /*:73*//*83:*/
-#line 1265 "common.w"
+#line 1266 "common.w"
 
 FILE*C_file;
 FILE*tex_file;
@@ -383,18 +383,18 @@ static void prime_the_change_buffer(void);
 static void check_change(void);
 
 /*:33*//*55:*/
-#line 762 "common.w"
+#line 763 "common.w"
 
 static int web_strcmp(char*,size_t,char*,size_t);
 static name_pointer add_section_name(name_pointer,int,char*,char*,boolean);
 static void extend_section_name(name_pointer,char*,char*,boolean);
 
 /*:55*//*64:*/
-#line 989 "common.w"
+#line 990 "common.w"
 static int section_name_cmp(char**,size_t,name_pointer);
 
 /*:64*//*76:*/
-#line 1184 "common.w"
+#line 1185 "common.w"
 static void scan_args(void);
 
 /*:76*/
@@ -408,7 +408,7 @@ void
 common_init(void)
 {
 /*45:*/
-#line 604 "common.w"
+#line 605 "common.w"
 
 name_dir->byte_start= byte_ptr= byte_mem;
 name_ptr= name_dir+1;
@@ -416,7 +416,7 @@ name_ptr->byte_start= byte_mem;
 root= NULL;
 
 /*:45*//*47:*/
-#line 627 "common.w"
+#line 628 "common.w"
 
 for(h= hash;h<=hash_end;*h++= NULL);
 
@@ -424,7 +424,7 @@ for(h= hash;h<=hash_end;*h++= NULL);
 #line 99 "common.w"
 
 /*74:*/
-#line 1137 "common.w"
+#line 1138 "common.w"
 
 show_banner= show_happiness= show_progress= make_xrefs= true;
 
@@ -432,7 +432,7 @@ show_banner= show_happiness= show_progress= make_xrefs= true;
 #line 100 "common.w"
 
 /*84:*/
-#line 1272 "common.w"
+#line 1273 "common.w"
 
 scan_args();
 if(program==ctangle){
@@ -600,7 +600,7 @@ boolean get_line(void)
 restart:
 if(changing&&include_depth==change_depth)
 /*38:*/
-#line 469 "common.w"
+#line 470 "common.w"
 {
 change_line++;
 if(!input_ln(change_file)){
@@ -635,7 +635,7 @@ prime_the_change_buffer();changing= !changing;print_where= true;
 
 if(!changing||include_depth> change_depth){
 /*37:*/
-#line 452 "common.w"
+#line 453 "common.w"
 {
 cur_line++;
 while(!input_ln(cur_file)){
@@ -715,6 +715,7 @@ if(k+l+2>=cur_file_name_end)too_long();
 for(;k>=cur_file_name;k--)*(k+l+1)= *k;
 strcpy(cur_file_name,temp_file_name);
 cur_file_name[l]= '/';
+
 if((cur_file= fopen(cur_file_name,"r"))!=NULL){
 cur_line= 0;print_where= true;
 goto restart;
@@ -731,7 +732,7 @@ return true;
 }
 
 /*:35*//*39:*/
-#line 501 "common.w"
+#line 502 "common.w"
 
 void
 check_complete(void){
@@ -745,14 +746,14 @@ err_print("! Change file entry did not match");
 }
 
 /*:39*//*40:*/
-#line 517 "common.w"
+#line 518 "common.w"
 
 void
 reset_input(void)
 {
 limit= buffer;loc= buffer+1;buffer[0]= ' ';
 /*41:*/
-#line 532 "common.w"
+#line 533 "common.w"
 
 if((web_file= fopen(web_file_name,"r"))==NULL){
 strcpy(web_file_name,alt_web_file_name);
@@ -766,7 +767,7 @@ if((change_file= fopen(change_file_name,"r"))==NULL)
 fatal("! Cannot open change file ",change_file_name);
 
 /*:41*/
-#line 522 "common.w"
+#line 523 "common.w"
 
 include_depth= cur_line= change_line= 0;
 change_depth= include_depth;
@@ -775,7 +776,7 @@ limit= buffer;loc= buffer+1;buffer[0]= ' ';input_has_ended= false;
 }
 
 /*:40*//*48:*/
-#line 632 "common.w"
+#line 633 "common.w"
 
 name_pointer
 id_lookup(
@@ -790,17 +791,17 @@ name_pointer p;
 if(last==NULL)for(last= first;*last!='\0';last++);
 l= (size_t)(last-first);
 /*49:*/
-#line 655 "common.w"
+#line 656 "common.w"
 
 h= (int)((eight_bits)*i);
 while(++i<last)h= (h+h+(int)((eight_bits)*i))%hash_size;
 
 
 /*:49*/
-#line 645 "common.w"
+#line 646 "common.w"
 
 /*50:*/
-#line 663 "common.w"
+#line 664 "common.w"
 
 p= hash[h];
 while(p&&!names_match(p,first,l,t))p= p->link;
@@ -810,10 +811,10 @@ p->link= hash[h];hash[h]= p;
 }
 
 /*:50*/
-#line 646 "common.w"
+#line 647 "common.w"
 
 if(p==name_ptr)/*51:*/
-#line 674 "common.w"
+#line 675 "common.w"
 {
 if(byte_ptr+l> byte_mem_end)overflow("byte memory");
 if(name_ptr>=name_dir_end)overflow("name");
@@ -823,13 +824,13 @@ if(program==cweave)p->ilk= t,init_node(p);
 }
 
 /*:51*/
-#line 647 "common.w"
+#line 648 "common.w"
 
 return p;
 }
 
 /*:48*//*52:*/
-#line 706 "common.w"
+#line 707 "common.w"
 
 void
 print_section_name(
@@ -848,7 +849,7 @@ if(q)term_write("...",3);
 }
 
 /*:52*//*53:*/
-#line 723 "common.w"
+#line 724 "common.w"
 
 void
 sprint_section_name(
@@ -868,7 +869,7 @@ s= p->byte_start;
 }
 
 /*:53*//*54:*/
-#line 741 "common.w"
+#line 742 "common.w"
 
 void
 print_prefix_name(
@@ -881,7 +882,7 @@ if(s+l<(p+1)->byte_start)term_write("...",3);
 }
 
 /*:54*//*56:*/
-#line 767 "common.w"
+#line 768 "common.w"
 
 static int web_strcmp(
 char*j,
@@ -899,7 +900,7 @@ else return greater;
 }
 
 /*:56*//*57:*/
-#line 796 "common.w"
+#line 797 "common.w"
 
 static name_pointer
 add_section_name(
@@ -929,7 +930,7 @@ return par==NULL?(root= p):c==less?(par->llink= p):(par->rlink= p);
 }
 
 /*:57*//*58:*/
-#line 824 "common.w"
+#line 825 "common.w"
 
 static void
 extend_section_name(
@@ -953,7 +954,7 @@ if(ispref)*(byte_ptr-1)= ' ';
 }
 
 /*:58*//*59:*/
-#line 852 "common.w"
+#line 853 "common.w"
 
 name_pointer
 section_lookup(
@@ -968,7 +969,7 @@ name_pointer par= NULL;
 
 size_t name_len= (size_t)(last-first+1);
 /*60:*/
-#line 876 "common.w"
+#line 877 "common.w"
 
 while(p){
 c= web_strcmp(first,name_len,first_chunk(p),prefix_length(p));
@@ -995,19 +996,19 @@ p= q,q= NULL;
 }
 
 /*:60*/
-#line 866 "common.w"
+#line 867 "common.w"
 
 /*61:*/
-#line 901 "common.w"
+#line 902 "common.w"
 
 if(r==NULL)
 return add_section_name(par,c,first,last+1,ispref);
 
 /*:61*/
-#line 867 "common.w"
+#line 868 "common.w"
 
 /*62:*/
-#line 909 "common.w"
+#line 910 "common.w"
 
 switch(section_name_cmp(&first,name_len,r)){
 
@@ -1041,12 +1042,12 @@ err_print(">");
 return r;
 
 /*:62*/
-#line 868 "common.w"
+#line 869 "common.w"
 
 }
 
 /*:59*//*63:*/
-#line 957 "common.w"
+#line 958 "common.w"
 
 static int section_name_cmp(
 char**pfirst,
@@ -1080,7 +1081,7 @@ default:return c;
 }
 
 /*:63*//*66:*/
-#line 1011 "common.w"
+#line 1012 "common.w"
 
 void
 err_print(
@@ -1088,7 +1089,7 @@ const char*s)
 {
 *s=='!'?printf("\n%s",s):printf("%s",s);
 if(web_file_open)/*67:*/
-#line 1030 "common.w"
+#line 1031 "common.w"
 
 {char*k,*l;
 if(changing&&include_depth==change_depth)
@@ -1109,20 +1110,20 @@ putchar(' ');
 }
 
 /*:67*/
-#line 1017 "common.w"
+#line 1018 "common.w"
 
 update_terminal();mark_error();
 }
 
 /*:66*//*68:*/
-#line 1063 "common.w"
+#line 1064 "common.w"
 
 int wrap_up(void){
 if(show_progress)new_line();
 if(show_stats)
 print_stats();
 /*69:*/
-#line 1073 "common.w"
+#line 1074 "common.w"
 
 switch(history){
 case spotless:
@@ -1136,14 +1137,14 @@ puts("(That was a fatal error, my friend.)");
 }
 
 /*:69*/
-#line 1068 "common.w"
+#line 1069 "common.w"
 
 if(history> harmless_message)return EXIT_FAILURE;
 else return EXIT_SUCCESS;
 }
 
 /*:68*//*70:*/
-#line 1091 "common.w"
+#line 1092 "common.w"
 void
 fatal(
 const char*s,const char*t)
@@ -1154,7 +1155,7 @@ history= fatal_message;exit(wrap_up());
 }
 
 /*:70*//*71:*/
-#line 1102 "common.w"
+#line 1103 "common.w"
 void
 overflow(
 const char*t)
@@ -1164,7 +1165,7 @@ printf("\n! Sorry, %s capacity exceeded",t);fatal("","");
 
 
 /*:71*//*75:*/
-#line 1155 "common.w"
+#line 1156 "common.w"
 
 static void
 scan_args(void)
@@ -1178,13 +1179,13 @@ boolean found_web= false,found_change= false,found_out= false;
 strcpy(change_file_name,"/dev/null");
 while(--argc> 0){
 if((**(++argv)=='-'||**argv=='+')&&*(*argv+1))/*80:*/
-#line 1243 "common.w"
+#line 1244 "common.w"
 
 for(dot_pos= *argv+1;*dot_pos> '\0';dot_pos++)
 flags[(eight_bits)*dot_pos]= flag_change;
 
 /*:80*/
-#line 1167 "common.w"
+#line 1168 "common.w"
 
 else{
 s= name_pos= *argv;dot_pos= NULL;
@@ -1193,17 +1194,17 @@ if(*s=='.')dot_pos= s++;
 else if(*s=='/')dot_pos= NULL,name_pos= ++s;
 else s++;
 if(!found_web)/*77:*/
-#line 1193 "common.w"
+#line 1194 "common.w"
 
 {
 if(s-*argv> max_file_name_length-5)
 /*82:*/
-#line 1259 "common.w"
+#line 1260 "common.w"
 fatal("! Filename too long\n",*argv);
 
 
 /*:82*/
-#line 1196 "common.w"
+#line 1197 "common.w"
 
 if(dot_pos==NULL)
 sprintf(web_file_name,"%s.w",*argv);
@@ -1220,21 +1221,21 @@ found_web= true;
 }
 
 /*:77*/
-#line 1175 "common.w"
+#line 1176 "common.w"
 
 else if(!found_change)/*78:*/
-#line 1211 "common.w"
+#line 1212 "common.w"
 
 {
 if(strcmp(*argv,"-")!=0){
 if(s-*argv> max_file_name_length-4)
 /*82:*/
-#line 1259 "common.w"
+#line 1260 "common.w"
 fatal("! Filename too long\n",*argv);
 
 
 /*:82*/
-#line 1215 "common.w"
+#line 1216 "common.w"
 
 if(dot_pos==NULL)
 sprintf(change_file_name,"%s.ch",*argv);
@@ -1244,20 +1245,20 @@ found_change= true;
 }
 
 /*:78*/
-#line 1176 "common.w"
+#line 1177 "common.w"
 
 else if(!found_out)/*79:*/
-#line 1223 "common.w"
+#line 1224 "common.w"
 
 {
 if(s-*argv> max_file_name_length-5)
 /*82:*/
-#line 1259 "common.w"
+#line 1260 "common.w"
 fatal("! Filename too long\n",*argv);
 
 
 /*:82*/
-#line 1226 "common.w"
+#line 1227 "common.w"
 
 if(dot_pos==NULL){
 sprintf(tex_file_name,"%s.tex",*argv);
@@ -1275,10 +1276,10 @@ found_out= true;
 }
 
 /*:79*/
-#line 1177 "common.w"
+#line 1178 "common.w"
 
 else/*81:*/
-#line 1247 "common.w"
+#line 1248 "common.w"
 
 {
 if(program==ctangle)
@@ -1292,12 +1293,12 @@ else fatal(
 }
 
 /*:81*/
-#line 1178 "common.w"
+#line 1179 "common.w"
 
 }
 }
 if(!found_web)/*81:*/
-#line 1247 "common.w"
+#line 1248 "common.w"
 
 {
 if(program==ctangle)
@@ -1311,7 +1312,7 @@ else fatal(
 }
 
 /*:81*/
-#line 1181 "common.w"
+#line 1182 "common.w"
 
 }
 
diff --git a/texk/web2c/cwebdir/common.w b/texk/web2c/cwebdir/common.w
index 83e37c14ac..b95dfdaa6b 100644
--- a/texk/web2c/cwebdir/common.w
+++ b/texk/web2c/cwebdir/common.w
@@ -441,6 +441,7 @@ The remainder of the \.{@@i} line after the file name is ignored.
     for (; k>=cur_file_name; k--) *(k+l+1)=*k;
     strcpy(cur_file_name,temp_file_name);
     cur_file_name[l]='/'; /* \UNIX/ pathname separator */
+@^system dependencies@>
     if ((cur_file=fopen(cur_file_name,"r"))!=NULL) {
       cur_line=0; print_where=true;
       goto restart; /* success */