dviout-util: version 20181010 from upstream

git-svn-id: svn://tug.org/texlive/trunk@48878 c570f23f-e606-0410-a88d-b1316a301751

8 files changed, 166 insertions, 79 deletions

diff --git a/Build/source/texk/dviout-util/ChangeLog b/Build/source/texk/dviout-util/ChangeLog
index b9acd25e376..e53d6bd67ed 100644
--- a/Build/source/texk/dviout-util/ChangeLog
+++ b/Build/source/texk/dviout-util/ChangeLog
@@ -1,3 +1,14 @@
+2018-10-10  Hironobu Yamashita  <h.y.acetaminophen@gmail.com>
+
+	* dvispc.c: Clean up code, more comments. Mostly revert
+	the change on 2018-10-06, "Change option handling for
+	future extensions" and change EXE2INDEP -> EXE2MODIFY.
+	Make sure outfile string is non-empty.
+	* chkdvifont.c: Do not stop for usage, always show all.
+	* dvispc.test: Test pipe input/output.
+	* chkdvifont.man, dvispc.man: More info.
+	* configure.ac: Version 20181010.
+
 2018-10-07  Hironobu Yamashita  <h.y.acetaminophen@gmail.com>
 
 	* chkdvifont.c: Checksum should be read as unsigned.
diff --git a/Build/source/texk/dviout-util/chkdvifont.c b/Build/source/texk/dviout-util/chkdvifont.c
index d2906bd66f2..4732f52e960 100644
--- a/Build/source/texk/dviout-util/chkdvifont.c
+++ b/Build/source/texk/dviout-util/chkdvifont.c
@@ -1254,6 +1254,7 @@ void usage()
 			"\t -p: force FONT mode\n"
 			"\t     (supported formats: vf/ovf/gf/pk/pkd/pxl/gth/far)\n"
 			"\t By default, mode is guessed from the file extension.\n\n"
+#if 0
 			"Input  M  to see more.  Push Return to quit");
 	switch (getc(stdin)) {
 	  case ('M'):
@@ -1266,7 +1267,8 @@ void usage()
 
   show:
 	fprintf(stderr,
-			"\n\nErrorlevel is the sum of the following number\n"
+#endif
+			"Errorlevel is the sum of the following number\n"
 			"\t  1: cmbsy5-9, cmcsc8-9, cmex7-9, cmmib5-9\n"
 			"\t  2: new font: eu??, msam, msbm, wncy??, font_data_file\n"
 			"\t  4: new eufm5-10\n"
diff --git a/Build/source/texk/dviout-util/chkdvifont.man b/Build/source/texk/dviout-util/chkdvifont.man
index 323b125bec5..9f7713a84c6 100644
--- a/Build/source/texk/dviout-util/chkdvifont.man
+++ b/Build/source/texk/dviout-util/chkdvifont.man
@@ -81,6 +81,17 @@ By default, the mode is guessed from the file extension.
             font at         =  0.962216
             font name       = rml
 
+.PP
+Listing the fonts used in a DVI file (as shown in the first example)
+is almost equivalent to
+.B dvifontlist
+in TeX-Guy package
+<http://www-masu.ist.osaka-u.ac.jp/%7Ekakugawa/TeX-Guy/>
+and a script
+.B dviinfox
+<https://ctan.org/pkg/dviinfox>.
+I don't know any alternatives for obtaining information about TFM, OFM,
+VF and other font formats.
 .SH SEE ALSO
 pltotf(1), tftopl(1), vptovf(1), vftovp(1)
 .SH AUTHOR
diff --git a/Build/source/texk/dviout-util/configure b/Build/source/texk/dviout-util/configure
index aae942ab935..0672e7c36ea 100755
--- a/Build/source/texk/dviout-util/configure
+++ b/Build/source/texk/dviout-util/configure
@@ -1,6 +1,6 @@
 #! /bin/sh
 # Guess values for system-dependent variables and create Makefiles.
-# Generated by GNU Autoconf 2.69 for dviout-util (TeX Live) 20181006.
+# Generated by GNU Autoconf 2.69 for dviout-util (TeX Live) 20181010.
 #
 # Report bugs to <tex-k@tug.org>.
 #
@@ -590,8 +590,8 @@ MAKEFLAGS=
 # Identity of this package.
 PACKAGE_NAME='dviout-util (TeX Live)'
 PACKAGE_TARNAME='dviout-util--tex-live-'
-PACKAGE_VERSION='20181006'
-PACKAGE_STRING='dviout-util (TeX Live) 20181006'
+PACKAGE_VERSION='20181010'
+PACKAGE_STRING='dviout-util (TeX Live) 20181010'
 PACKAGE_BUGREPORT='tex-k@tug.org'
 PACKAGE_URL=''
 
@@ -1332,7 +1332,7 @@ if test "$ac_init_help" = "long"; then
   # Omit some internal or obsolete options to make the list less imposing.
   # This message is too long to be a string in the A/UX 3.1 sh.
   cat <<_ACEOF
-\`configure' configures dviout-util (TeX Live) 20181006 to adapt to many kinds of systems.
+\`configure' configures dviout-util (TeX Live) 20181010 to adapt to many kinds of systems.
 
 Usage: $0 [OPTION]... [VAR=VALUE]...
 
@@ -1403,7 +1403,7 @@ fi
 
 if test -n "$ac_init_help"; then
   case $ac_init_help in
-     short | recursive ) echo "Configuration of dviout-util (TeX Live) 20181006:";;
+     short | recursive ) echo "Configuration of dviout-util (TeX Live) 20181010:";;
    esac
   cat <<\_ACEOF
 
@@ -1524,7 +1524,7 @@ fi
 test -n "$ac_init_help" && exit $ac_status
 if $ac_init_version; then
   cat <<\_ACEOF
-dviout-util (TeX Live) configure 20181006
+dviout-util (TeX Live) configure 20181010
 generated by GNU Autoconf 2.69
 
 Copyright (C) 2012 Free Software Foundation, Inc.
@@ -2180,7 +2180,7 @@ cat >config.log <<_ACEOF
 This file contains any messages produced by compilers while
 running configure, to aid debugging if configure makes a mistake.
 
-It was created by dviout-util (TeX Live) $as_me 20181006, which was
+It was created by dviout-util (TeX Live) $as_me 20181010, which was
 generated by GNU Autoconf 2.69.  Invocation command line was
 
   $ $0 $@
@@ -7865,7 +7865,7 @@ fi
 
 # Define the identity of the package.
  PACKAGE='dviout-util--tex-live-'
- VERSION='20181006'
+ VERSION='20181010'
 
 
 cat >>confdefs.h <<_ACEOF
@@ -13891,7 +13891,7 @@ Usage: $0 [OPTIONS]
 Report bugs to <bug-libtool@gnu.org>."
 
 lt_cl_version="\
-dviout-util (TeX Live) config.lt 20181006
+dviout-util (TeX Live) config.lt 20181010
 configured by $0, generated by GNU Autoconf 2.69.
 
 Copyright (C) 2011 Free Software Foundation, Inc.
@@ -15496,7 +15496,7 @@ cat >>$CONFIG_STATUS <<\_ACEOF || ac_write_fail=1
 # report actual input values of CONFIG_FILES etc. instead of their
 # values after options handling.
 ac_log="
-This file was extended by dviout-util (TeX Live) $as_me 20181006, which was
+This file was extended by dviout-util (TeX Live) $as_me 20181010, which was
 generated by GNU Autoconf 2.69.  Invocation command line was
 
   CONFIG_FILES    = $CONFIG_FILES
@@ -15562,7 +15562,7 @@ _ACEOF
 cat >>$CONFIG_STATUS <<_ACEOF || ac_write_fail=1
 ac_cs_config="`$as_echo "$ac_configure_args" | sed 's/^ //; s/[\\""\`\$]/\\\\&/g'`"
 ac_cs_version="\\
-dviout-util (TeX Live) config.status 20181006
+dviout-util (TeX Live) config.status 20181010
 configured by $0, generated by GNU Autoconf 2.69,
   with options \\"\$ac_cs_config\\"
 
diff --git a/Build/source/texk/dviout-util/configure.ac b/Build/source/texk/dviout-util/configure.ac
index 2981dbe145a..506dcfdb99e 100644
--- a/Build/source/texk/dviout-util/configure.ac
+++ b/Build/source/texk/dviout-util/configure.ac
@@ -6,7 +6,7 @@ dnl   This file is free software; the copyright holder
 dnl   gives unlimited permission to copy and/or distribute it,
 dnl   with or without modifications, as long as this notice is preserved.
 dnl
-AC_INIT([dviout-util (TeX Live)], [20181006], [tex-k@tug.org])
+AC_INIT([dviout-util (TeX Live)], [20181010], [tex-k@tug.org])
 AC_PREREQ([2.65])
 AC_CONFIG_SRCDIR([dvispc.c])
 AC_CONFIG_AUX_DIR([../../build-aux])
diff --git a/Build/source/texk/dviout-util/dvispc.c b/Build/source/texk/dviout-util/dvispc.c
index b214730a8c7..a747df6feee 100644
--- a/Build/source/texk/dviout-util/dvispc.c
+++ b/Build/source/texk/dviout-util/dvispc.c
@@ -220,20 +220,16 @@ struct DIMENSION_REC {
 #define DTL_FORM    0x8000   /* the first line: variety      */
 int f_dtl = 0;
 
-#define EXE2INDEP   0x1
-#define EXE2FLAT    0x2
-#define EXE2ACTUAL  0x3F /* above are inclusive, below are exclusive */
-#define EXE2CHECK   0x40
-#define EXE2SPECIAL 0x80
-#define EXE2TEXT    0x100
-#define EXE2DVI     0x200
-
-int  f_mode = 0;    /*  1: -c page_indep
-                        2: -f flatten_nest
-                       64: -d report only
-                      128: -s show specials
-                      256: -a to_Text
-                      512: -x to_DVI   */
+enum {
+    EXE2NONE, EXE2MODIFY, EXE2CHECK, EXE2SPECIAL, EXE2TEXT, EXE2DVI
+};
+
+int  f_mode = EXE2NONE; /*  1: -c modify
+                            2: -d report only
+                            3: -s specials
+                            4: -a to_Text
+                            5: -x to_DVI   */
+/* default mode will be set in main() to be page_indep */
 
 int f_debug = 0;        /* -v */
 int f_overwrite = 0;
@@ -486,15 +482,9 @@ int main(int argc, char **argv)
       for(len = 1; argv[i][len]; len++){
         switch(argv[i][len]){
             case 'c':
-                f_mode &= EXE2ACTUAL;
-                f_mode |= EXE2INDEP;
-                break;
-#if 0
-            case 'f':
-                f_mode &= EXE2ACTUAL;
-                f_mode |= EXE2FLAT;
+                f_mode = EXE2MODIFY;
                 break;
-#endif
+
             case 's':
                 f_mode = EXE2SPECIAL;
                 break;
@@ -620,7 +610,7 @@ skip: ;
        cf.  argc = (number of all arguments) + 1
         {argv[0] is the program name itself} ^^^ */
 
-    if(!f_mode) f_mode = EXE2INDEP; /* default mode */
+    if(!f_mode) f_mode = EXE2MODIFY; /* default mode */
 
     fnum = 0;
     if(!isatty(fileno(stdin))){  /* if stdin is redirected from a file */
@@ -645,7 +635,7 @@ skip: ;
             if(fp_out == NULL){
                 /* outfile not given, free stdout;
                    binary cannot be written, text is fine */
-                if((f_mode & EXE2INDEP) || f_mode == EXE2DVI)
+                if(f_mode == EXE2MODIFY || f_mode == EXE2DVI)
                     usage(1);
                 fp_out = stdout;
             }
@@ -664,17 +654,18 @@ skip: ;
                 /* outfile not given;
                    nonetheless binary should be written to a file,
                    text is fine with free stdout */
-                if((f_mode & EXE2INDEP))
+                if(f_mode == EXE2MODIFY)
                     strcpy(outfile, argv[argc-1]);
                 else
                     fp_out = stdout;
             }else
+                /* [TODO] this may not work well? (especially for EXE2DVI) */
                 /* if fp_out == NULL, non-empty stdin and free stdout
                     -> the only argument = outfile (input from stdin)
                    otherwise, redirected stdout
                     -> the only argument = infile
                        if fnum == 2, non-empty stdin will be discarded but don't care!
-                       (output to overwrite for EXE2INDEP, stdout for others) */
+                       (output to overwrite for EXE2MODIFY, stdout for others) */
                 strcpy((fp_out == NULL)?outfile:infile, argv[argc-1]);
             break;
 
@@ -690,7 +681,7 @@ skip: ;
             usage(1);
     }
 #ifndef UNIX
-    if(fp_out && !*outfile && (f_mode == EXE2DVI || (f_mode & EXE2INDEP)))
+    if(fp_out && !*outfile && (f_mode == EXE2DVI || f_mode == EXE2MODIFY))
         setmode( fileno( stdout ), O_BINARY);
 #endif
     if(fp_in && !*infile && f_mode != EXE2DVI){
@@ -707,7 +698,7 @@ skip: ;
         if(fp_in == NULL || *infile){
             fp_in = fopen(infile, READ_TEXT);
             if(fp_in == NULL){
-                fprintf(stderr, "Cannot open %s\n", infile);
+                fprintf(stderr, "Cannot open %s for input\n", infile);
                 exit(1);
             }
         }
@@ -718,7 +709,7 @@ skip: ;
                 strcat(outfile, ".dvi");
             fp_out = fopen(outfile, WRITE_BINARY);
             if(fp_out == NULL){
-                fprintf(stderr, "Cannot open %s\n", outfile);
+                fprintf(stderr, "Cannot open %s for output\n", outfile);
                 exit(1);
             }
         }
@@ -737,7 +728,7 @@ skip: ;
 
     /* [TODO] comments not added yet */
     if(argc - i == 1){
-        if((f_mode & EXE2INDEP) && !fnum){
+        if(f_mode == EXE2MODIFY && !fnum){
 #ifdef UNIX
             static char tmpfile[] = "/tmp/dvispcXXXXXX";
             int fd;
@@ -776,19 +767,19 @@ same:       strcpy(outfile, infile);
         dvi_info.file_ptr = fp_in;
         dvi_info.file_name = "stdin";
     }else if ((dvi_info.file_ptr = fopen(dvi_info.file_name, READ_BINARY)) == NULL){
-        fprintf(stderr, "Cannot open %s\n", infile);
+        fprintf(stderr, "Cannot open %s for input\n", infile);
         exit(1);
     }
     /* [TODO] I'd like to use outfile if given */
     if(fp_out == NULL || *outfile){
         if(!*outfile)
             fp_out = (f_mode == EXE2TEXT || f_mode == EXE2SPECIAL)?stdout:stderr;
-        else if((f_mode & EXE2INDEP))
+        else if(f_mode == EXE2MODIFY)
             fp_out = stderr;
         else{
             fp_out = fopen(outfile, WRITE_TEXT);
             if(fp_out == NULL){
-                fprintf(stderr, "Cannot open %s\n", outfile);
+                fprintf(stderr, "Cannot open %s for output\n", outfile);
                 exit(1);
             }
         }
@@ -818,10 +809,10 @@ void translate(DVIFILE_INFO *dvi, DIMENSION *dim)
     int page, page2, pos, count, size, former, current, flag;
     FILE *fp;
 
-    if((f_mode & EXE2INDEP)){
+    if(f_mode == EXE2MODIFY){
         fp = (*outfile)?fopen(outfile, WRITE_BINARY):fp_out;
         if(fp == NULL){
-            fprintf(stderr, "Cannot open %s\n", outfile);
+            fprintf(stderr, "Cannot open %s for output\n", outfile);
             exit(4);
         }else if(fp==stdout)
             f_debug = 0; /* ignore -v option, as debug output goes there, sigh */
@@ -879,24 +870,24 @@ lastpage:           if(isdigit(*++out_pages)){
         fclose(fp_out);
         dvi->file_ptr = fp_out = NULL;
         return;
-    } /* if(f_mode == EXE2TEXT || f_mode == EXE2SPECIAL) */
+    } /* done for if(f_mode == EXE2TEXT || f_mode == EXE2SPECIAL),
+         the rest of translate() is meant for
+         if((f_mode == EXE2MODIFY) and (f_mode == EXE2CHECK)) */
 
     /* Prior scanning. This ensures page independence in reverse order too,
        by checking whether non-stack specials appears somewhere in DVI.
        Specials with paired syntax (push/pop, bcolor/ecolor) are already safe
        without pre-scanning, so these are skipped due to f_prescan = 1.
        Other specials (background, pdf_bgcolor, pn) are handled in this scanning. */
-    if((f_mode & EXE2INDEP) || f_mode == EXE2CHECK){
-        f_prescan = 1;  /* change behavior of interpret(dvi) */
-        for(page = 1; page <= dim->total_page; page++){
-            fseek(dvi->file_ptr, dim->page_index[page], SEEK_SET);
-            interpret(dvi->file_ptr);
-        }
-        f_prescan = 0;  /* restore interpret(dvi) */
+    f_prescan = 1;  /* change behavior of interpret(dvi) */
+    for(page = 1; page <= dim->total_page; page++){
+        fseek(dvi->file_ptr, dim->page_index[page], SEEK_SET);
+        interpret(dvi->file_ptr);
     }
+    f_prescan = 0;  /* restore interpret(dvi) */
 
     former = current = -1;
-    if(fp){  /* ((f_mode & EXE2INDEP)) and can be opened */
+    if(fp){  /* f_mode == EXE2MODIFY and can be opened */
         fseek(dvi->file_ptr, 0, SEEK_SET);
         for(size =  dim->page_index[1]; size > 0; size--)
             write_byte(read_byte(dvi->file_ptr), fp);   /* Write preamble */
@@ -907,7 +898,7 @@ lastpage:           if(isdigit(*++out_pages)){
         write_long(former, fp);                         /* ptr to the former page = -1 */
     }
 
-    for(page = 1; page <= dim->total_page; page++){
+    for(page = 1; page <= dim->total_page; page++){ /* page loop start */
         fseek(dvi->file_ptr, dim->page_index[page], SEEK_SET);
         f_background = 0;
         f_pdf_bgcolor = 0;
@@ -944,7 +935,7 @@ lastpage:           if(isdigit(*++out_pages)){
         }
         if(f_mode == EXE2CHECK)
             continue;  /* skip loop if (f_mode == EXE2CHECK);
-                        * remainings are for (f_mode & EXE2INDEP) */
+                        * remainings in this loop are for (f_mode == EXE2MODIFY) */
 
         /* [Process 2] at the beginning of each page,
            recover from stack underflow, and put non-stack specials if necessary */
@@ -995,8 +986,8 @@ lastpage:           if(isdigit(*++out_pages)){
         former = current;
         current = ftell(fp);        /* get position of BOP/POST */
 
-        /* [Process 5] start the next page,
-           with passing not-yet-closed stacks */
+        /* [Process 5] except for the last page,
+           start the next page with passing not-yet-closed stacks */
         if(page < dim->total_page){
             fseek(dvi->file_ptr, dim->page_index[page+1], SEEK_SET);
             for(size = 41; size > 0; size--)  /* write BOP and c[] */
@@ -1018,7 +1009,8 @@ lastpage:           if(isdigit(*++out_pages)){
             if(tpic_pn[0])
                 f_needs_corr++;
         }
-    }
+    } /* page loop end */
+
     if(f_debug) {
         if(color_depth_max)
             fprintf(fp_out, "\nMaximal depth of color stack:%d", color_depth_max);
@@ -1027,7 +1019,7 @@ lastpage:           if(isdigit(*++out_pages)){
         if(pdf_annot_depth_max)
             fprintf(fp_out, "\nMaximal depth of pdf:bann ... pdf:eann stack:%d", pdf_annot_depth_max);
     }
-    if(!(f_mode & EXE2INDEP)){
+    if(f_mode == EXE2CHECK){
         fclose(dvi->file_ptr);
         fprintf(fp_out, f_needs_corr?
             "\nSome corrections are necessary!\n":
@@ -1035,7 +1027,7 @@ lastpage:           if(isdigit(*++out_pages)){
         fclose(fp_out);
         dvi->file_ptr = fp_out = NULL;
         return;
-    }
+    } /* done for EXE2CHECK; remainings are for EXE2MODIFY */
 
     /* if -z option is given, add empty pages to make multiple of 4 pages */
     if(f_book && dim->total_page%4 == 0)
@@ -1111,7 +1103,7 @@ lastpage:           if(isdigit(*++out_pages)){
         }
         fprintf(stderr, "\nDVI file %s is corrected\n", infile);
     }else
-        fprintf(stderr, "\nCreate a new DVI file %s\n", outfile);
+        fprintf(stderr, "\nCreate a new DVI file %s\n", (fp_out==stdout)?"(stdout)":outfile);
 }
 
 
@@ -2593,7 +2585,7 @@ err:            fprintf(stderr, "Error(line %d, code %d): %s\n", line, code, tmp
     }
     num = ftell(fp_out);
     fprintf(stderr, "Write %d byte (%d page): %s\n", num, page,
-        (fp_out==stdout)?"":outfile);
+        (fp_out==stdout)?"(stdout)":outfile);
     fclose(fp_in);
     fclose(fp_out);
     fp_in = fp_out = NULL;
diff --git a/Build/source/texk/dviout-util/dvispc.man b/Build/source/texk/dviout-util/dvispc.man
index c3e5c205bdb..0c73de6aa4f 100644
--- a/Build/source/texk/dviout-util/dvispc.man
+++ b/Build/source/texk/dviout-util/dvispc.man
@@ -25,22 +25,22 @@ dvispc \- Modify a DVI file to be page-independent in specials
 .B Dvispc
 is a utility to modify/edit \*(TX DVI file with the following features:
 .PP
-Option \fB\-c\fR (default):
-  modify an input DVI to be page-independent in specials (default)
+    Mode option \fB\-c\fR (default):
+        modify an input DVI to be page-independent in specials (default)
 .PP
-Option \fB\-d\fR:
-  check if an input DVI is page-independent in specials
+    Mode option \fB\-d\fR:
+        check if an input DVI is page-independent in specials
 .PP
-Option \fB\-s\fR:
-  show all specials in the input DVI
+    Mode option \fB\-s\fR:
+        show all specials in the input DVI
 .PP
-Option \fB\-a\fR:
-  translate DVI into a Text (like \fBdv2dt\fR in dtl)
+    Mode option \fB\-a\fR:
+        translate DVI into a Text (like \fBdv2dt\fR in dtl)
 .PP
-Option \fB\-x\fR:
-  translate Text into a DVI (like \fBdt2dv\fR in dtl)
+    Mode option \fB\-x\fR:
+        translate Text into a DVI (like \fBdt2dv\fR in dtl)
 .PP
-The main feature of
+(1) The \fImain\fR feature of
 .B dvispc
 is the first one, to make a page-independent DVI file.
 .PP
@@ -55,8 +55,72 @@ fails to preserve \\special's (e.g. page color might be lost).
 .PP
 The program
 .B dvispc
-corrects such DVI files to be page-independent, which can be properly
-processed by common DVI drivers such as \fBdvips\fR and \fBdvipdfmx\fR.
+corrects such page-"dependent" DVI files to be page-independent,
+which can be safely processed by
+.B dviselect
+or
+.B dvidvi
+and then properly converted to other formats such as PostScript and PDF.
+.PP
+(2) To know whether such a correction is needed or not,
+.B dvispc \-d
+will suffice.
+.PP
+(3) The mode \fB\-s\fR lists all specials found in the input DVI as-is,
+with a preceding number which denotes the page where it appears.
+For example,
+.PP
+.RS
+[1]
+.br
+{color push  Black}
+.br
+{color pop}
+.br
+{color push rgb 1 0 0}
+.br
+{color pop}
+.br
+[2]
+.br
+{color push  Black}
+.br
+{color pop}
+.RE
+.LP
+This feature is equivalent to a program
+.B dvispecials
+in TeX-Guy package
+<http://www-masu.ist.osaka-u.ac.jp/%7Ekakugawa/TeX-Guy/>
+and
+.B dvii \-s
+<https://ctan.org/pkg/dvii>.
+.PP
+(4) The mode \fB-a\fR and \fB-x\fR correspond to
+.B dv2dt
+and
+.B dt2dv
+in the dtl (= DVI Text Language) package respectively. By default
+.B dvispc \-a
+formats the output text in its own style, but DTL-compatible
+format is available with
+.B \-t
+option. Also,
+.B dvispc \-x
+can accept DTL-compatible text input.
+.SH SUPPORTED SPECIALS
+Currently
+.B dvispc
+supports the followings:
+.PP
+    dvips-compatible specials
+        color push, color pop, background
+    dvipdfm(x) specials
+        pdf:bcolor, pdf:ecolor, pdf:bgcolor, pdf:bann, pdf:eann
+    tpic specials:
+        pn
+.PP
+Other specials might be supported in the future if needed.
 .SH SEE ALSO
 dviselect(1), dvidvi(1), dvips(1), dvipdfmx(1)
 .SH AUTHOR
diff --git a/Build/source/texk/dviout-util/dvispc.test b/Build/source/texk/dviout-util/dvispc.test
index 51e025c1f32..5af3aace3db 100755
--- a/Build/source/texk/dviout-util/dvispc.test
+++ b/Build/source/texk/dviout-util/dvispc.test
@@ -41,6 +41,13 @@ diff --strip-trailing-cr $testdir/test.spc $testdir/test.spc \
   ./dvispc -x < x1testa.txt > x1testax.dvi && \
   cmp $testdir/test.dvi x1testax.dvi && echo || exit 5
 
+# not working as expected only for test ??
+#./dvispc -a $testdir/test.dvi | ./dvispc -x x2testax.dvi && \
+#  cmp $testdir/test.dvi x2testax.dvi && echo || exit 5
+
+./dvispc -a $testdir/test.dvi | ./dvispc -x > x2testax.dvi && \
+  cmp $testdir/test.dvi x2testax.dvi && echo || exit 5
+
 
 ## EXE2INDEP