Miscellaneous script portability enhancements.

* aclocal.m4: (GROFF_CSH_HACK): Add space in shebang prototype for
generated conftest.sh script, conforming to portability
recommendation in autoconf docs.
* configure: Likewise, for code generated by GROFF_CSH_HACK.
* contrib/eqn2graph/eqn2graph.sh: Add space in shebang, conforming
to portability recommendation in autoconf docs.
* contrib/gdiffmk/gdiffmk.sh: Likewise.
* contrib/gdiffmk/tests/runtests.in: Likewise.
* contrib/grap2graph/grap2graph.sh: Likewise.
* contrib/groffer/groffer.sh: Likewise.
* contrib/mm/mmroff.pl: Likewise.
* contrib/mom/momdoc/appendices.html: Likewise.
* contrib/pic2graph/pic2graph.sh: Likewise.
* font/devps/generate/afmname: Likewise.
* src/devices/xditview/ad2c: Likewise.
* src/preproc/eqn/neqn.sh: Likewise.
* src/roff/grog/grog.pl: Likewise.
* src/roff/grog/grog.sh: Likewise.
* src/roff/nroff/nroff.sh: Likewise.
* PROBLEMS: Likewise, in embedded script examples.


Improve portability of `pdfroff' shell script.

* arch/misc/shdeps.sh: Add space in shebang, conforming to
portability guidelines in `autoconf' docs.
(PATH_SEARCH_SETUP): New substitution; emits PATH_SEPARATOR
initialization code.  Used by contrib/pdfmark/pdfroff.sh's
`searchpath' function.

23 files changed, 207 insertions, 65 deletions

diff --git a/ChangeLog b/ChangeLog
index 38152841..c182d485 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,38 @@
+2005-05-16  Keith Marshall  <keith.d.marshall@ntlworld.com>
+
+	Miscellaneous script portability enhancements.
+
+	* aclocal.m4: (GROFF_CSH_HACK): Add space in shebang prototype for
+	generated conftest.sh script, conforming to portability
+	recommendation in autoconf docs.
+	* configure: Likewise, for code generated by GROFF_CSH_HACK.
+	* contrib/eqn2graph/eqn2graph.sh: Add space in shebang, conforming
+	to portability recommendation in autoconf docs.
+	* contrib/gdiffmk/gdiffmk.sh: Likewise.
+	* contrib/gdiffmk/tests/runtests.in: Likewise.
+	* contrib/grap2graph/grap2graph.sh: Likewise.
+	* contrib/groffer/groffer.sh: Likewise.
+	* contrib/mm/mmroff.pl: Likewise.
+	* contrib/mom/momdoc/appendices.html: Likewise.
+	* contrib/pic2graph/pic2graph.sh: Likewise.
+	* font/devps/generate/afmname: Likewise.
+	* src/devices/xditview/ad2c: Likewise.
+	* src/preproc/eqn/neqn.sh: Likewise.
+	* src/roff/grog/grog.pl: Likewise.
+	* src/roff/grog/grog.sh: Likewise.
+	* src/roff/nroff/nroff.sh: Likewise.
+	* PROBLEMS: Likewise, in embedded script examples.
+
+2005-05-16  Keith Marshall  <keith.d.marshall@ntlworld.com>
+
+	Improve portability of `pdfroff' shell script.
+
+	* arch/misc/shdeps.sh: Add space in shebang, conforming to
+	portability guidelines in `autoconf' docs.
+	(PATH_SEARCH_SETUP): New substitution; emits PATH_SEPARATOR
+	initialization code.  Used by contrib/pdfmark/pdfroff.sh's
+	`searchpath' function.
+
 2005-05-14  Werner LEMBERG  <wl@gnu.org>
 
 	* contrib/pic2graph/pic2graph.sh, contrib/graph2graph.sh,
@@ -135,7 +170,7 @@
 	* src/roff/nroff/nroff.sh: Make the script accept option `-M'.
 
 2005-04-01  Kees Zeelenberg  <kzlg@users.sourceforge.net>
-            Werner LEMBERG  <wl@gnu.org>
+	    Werner LEMBERG  <wl@gnu.org>
 
 	Add binary relocation support for Windows platforms.
 
diff --git a/PROBLEMS b/PROBLEMS
index f096e550..ba43b3ce 100644
--- a/PROBLEMS
+++ b/PROBLEMS
@@ -633,13 +633,13 @@ as empty):
 
 Create a script called 'eqn':
 
- > #!/bin/sh
+ > #! /bin/sh
  > if [ ${1:-""} = /usr/pub/eqnchar ] ; then shift ; fi
  > geqn $*
 
 and a script called 'neqn':
 
- > #!/bin/sh
+ > #! /bin/sh
  > if [ ${1:-""} = /usr/pub/eqnchar ] ; then shift ; fi
  > geqn -Tascii $*
 
@@ -659,7 +659,7 @@ To get PostScript output from 'man -t', you also need to create a
 --- /usr/local/bin/psroff       Sat Feb 13 17:45:46 1993
 ***************
 *** 1,8 ****
-  #!/bin/sh
+  #! /bin/sh
 ! # Emulate nroff with groff.
 
   prog="$0"
@@ -668,7 +668,7 @@ To get PostScript output from 'man -t', you also need to create a
 
   for i
 --- 1,8 ----
-  #!/bin/sh
+  #! /bin/sh
 ! # Emulate psroff with groff.
 
   prog="$0"
diff --git a/aclocal.m4 b/aclocal.m4
index 2e122d17..13bcfac7 100644
--- a/aclocal.m4
+++ b/aclocal.m4
@@ -202,7 +202,7 @@ AC_DEFUN([GROFF_CSH_HACK],
   [AC_MSG_CHECKING([for csh hash hack])
 
 cat <<EOF >conftest.sh
-#!/bin/sh
+#! /bin/sh
 true || exit 0
 export PATH || exit 0
 exit 1
diff --git a/arch/misc/shdeps.sh b/arch/misc/shdeps.sh
index 623f7a55..133aea5e 100644
--- a/arch/misc/shdeps.sh
+++ b/arch/misc/shdeps.sh
@@ -1,7 +1,7 @@
-#!/bin/sh
+#! /bin/sh
 # shdeps.sh: Generate OS dependency fixups, for `groff' shell scripts
 #
-# Copyright (C) 2004 Free Software Foundation, Inc.
+# Copyright (C) 2004, 2005 Free Software Foundation, Inc.
 #      Written by Keith Marshall (keith.d.marshall@ntlworld.com)
 #
 # Invoked only by `make', as:
@@ -40,6 +40,7 @@ then
   cat << ETX
 \\
 GROFF_RUNTIME="\${GROFF_BIN_PATH=$3}:"
+/@PATH_SEARCH_SETUP@/d
 ETX
 
 else
@@ -83,6 +84,34 @@ case "\$OSTYPE" in\\
     GROFF_RUNTIME=\${GROFF_BIN_PATH="$POSIX_BINDIR"}";" ;;\\
 esac
 ETX
+  # On Microsoft platforms, we may also need to configure
+  # the PATH search function, used in the `pdfroff' script,
+  # to use ';', instead of ':', as the PATH_SEPARATOR.
+
+  cat << ETX
+/@PATH_SEARCH_SETUP@/c\\
+#\\
+# This implementation is configured for a Microsoft platform.\\
+# Thus, the default PATH_SEPARATOR is ';', although some shells may\\
+# use the POSIX standard ':' instead.  Therefore, we need to examine\\
+# the OSTYPE environment variable, to identify which is appropriate\\
+# to make PATH searches work correctly.\\
+#\\
+  case "\$OSTYPE" in\\
+#\\
+    msys | cygwin)\\
+    #\\
+    # These emulate POSIX, and use ':'\\
+    #\\
+      PATH_SEPARATOR=\${PATH_SEPARATOR-':'} ;;\\
+#\\
+    *)\\
+    #\\
+    # For anything else, default to ';'\\
+    #\\
+      PATH_SEPARATOR=\${PATH_SEPARATOR-';'} ;;\\
+  esac
+ETX
 
 fi
 
diff --git a/configure b/configure
index b0452396..107aadca 100755
--- a/configure
+++ b/configure
@@ -5721,7 +5721,7 @@ echo "$as_me:$LINENO: checking for csh hash hack" >&5
 echo $ECHO_N "checking for csh hash hack... $ECHO_C" >&6
 
 cat <<EOF >conftest.sh
-#!/bin/sh
+#! /bin/sh
 true || exit 0
 export PATH || exit 0
 exit 1
diff --git a/contrib/eqn2graph/eqn2graph.sh b/contrib/eqn2graph/eqn2graph.sh
index 9a6ce068..98713a85 100644
--- a/contrib/eqn2graph/eqn2graph.sh
+++ b/contrib/eqn2graph/eqn2graph.sh
@@ -1,4 +1,4 @@
-#!/bin/sh
+#! /bin/sh
 #
 # eqn2graph -- compile EQN equation descriptions to bitmap images
 #
@@ -32,7 +32,7 @@
 #
 # Thus, we pass -U to groff(1), and everything else to convert(1).
 #
-# $Id: eqn2graph.sh,v 1.4 2005/05/17 20:20:53 wl Exp $
+# $Id: eqn2graph.sh,v 1.5 2005/05/18 07:03:06 wl Exp $
 #
 groff_opts=""
 convert_opts=""
diff --git a/contrib/gdiffmk/gdiffmk.sh b/contrib/gdiffmk/gdiffmk.sh
index 85acbe9c..68e5b8f5 100644
--- a/contrib/gdiffmk/gdiffmk.sh
+++ b/contrib/gdiffmk/gdiffmk.sh
@@ -1,4 +1,4 @@
-#!/bin/sh
+#! /bin/sh
 # Copyright (C) 2004, 2005 Free Software Foundation, Inc.
 # Written by Mike Bianchi <MBianchi@Foveal.com <mailto:MBianchi@Foveal.com>>
 
diff --git a/contrib/gdiffmk/tests/runtests.in b/contrib/gdiffmk/tests/runtests.in
index 200a95b1..82952652 100644
--- a/contrib/gdiffmk/tests/runtests.in
+++ b/contrib/gdiffmk/tests/runtests.in
@@ -1,4 +1,4 @@
-#!/bin/sh
+#! /bin/sh
 #	A very simple function test for gdiffmk.sh.
 
 srcdir=@srcdir@
diff --git a/contrib/grap2graph/grap2graph.sh b/contrib/grap2graph/grap2graph.sh
index 99d9a96d..7c830c1a 100644
--- a/contrib/grap2graph/grap2graph.sh
+++ b/contrib/grap2graph/grap2graph.sh
@@ -1,4 +1,4 @@
-#!/bin/sh
+#! /bin/sh
 #
 # grap2graph -- compile graph description descriptions to bitmap images
 #
@@ -28,7 +28,7 @@
 #
 # Thus, we pass -U to groff(1), and everything else to convert(1).
 #
-# $Id: grap2graph.sh,v 1.3 2005/05/17 20:20:53 wl Exp $
+# $Id: grap2graph.sh,v 1.4 2005/05/18 07:03:06 wl Exp $
 #
 groff_opts=""
 convert_opts=""
diff --git a/contrib/groffer/groffer.sh b/contrib/groffer/groffer.sh
index 0a352766..c2146a23 100644
--- a/contrib/groffer/groffer.sh
+++ b/contrib/groffer/groffer.sh
@@ -1,4 +1,4 @@
-#!/bin/sh
+#! /bin/sh
 
 # groffer - display groff files
 
diff --git a/contrib/mm/mmroff.pl b/contrib/mm/mmroff.pl
index 155550bf..f61daa10 100644
--- a/contrib/mm/mmroff.pl
+++ b/contrib/mm/mmroff.pl
@@ -1,4 +1,4 @@
-#!/usr/bin/perl
+#! /usr/bin/perl
 
 use strict;
 # runs groff in safe mode, that seems to be the default
diff --git a/contrib/mom/momdoc/appendices.html b/contrib/mom/momdoc/appendices.html
index fa62535e..6b5b63fc 100644
--- a/contrib/mom/momdoc/appendices.html
+++ b/contrib/mom/momdoc/appendices.html
@@ -506,7 +506,7 @@ script requires an argument (the .pfb filename), then prompts for
 the GROFF_FONTNAME.
 <p>
 <pre>
-#!/bin/bash
+#! /bin/bash
 
 # A script for installing Type1 fonts.
 #
diff --git a/contrib/pdfmark/ChangeLog b/contrib/pdfmark/ChangeLog
index b96debed..1b2e5bab 100644
--- a/contrib/pdfmark/ChangeLog
+++ b/contrib/pdfmark/ChangeLog
@@ -1,3 +1,19 @@
+2005-05-17  Keith Marshall  <keith.d.marshall@ntlworld.com>
+
+	Improve portability of `pdfroff' shell script.
+
+	* pdfroff.sh: Add space in shebang, conforming to portability
+	guidelines in `autoconf' docs.
+	(searchpath): New shell function; use it instead of `type' command
+	to locate prerequisite helper programs.
+
+	* pdfroff.man: Socument influence of `TYPE' and `PATH_SEPARATOR'
+	environment variables.
+
+	* Makefile.sub: (pdfroff): Make it depend on SH_DEPS_SED_SCRIPT,
+	from arch/misc/shdeps.sh; use it to customize PATH_SEPARATOR
+	initialization code for `searchpath' function in pdfroff.sh.
+
 2005-05-16  Keith Marshall  <keith.d.marshall@ntlworld.com>
 
 	Interim documentation update.
diff --git a/contrib/pdfmark/Makefile.sub b/contrib/pdfmark/Makefile.sub
index af7d01bf..387dc167 100644
--- a/contrib/pdfmark/Makefile.sub
+++ b/contrib/pdfmark/Makefile.sub
@@ -71,12 +71,13 @@ gnu.eps:
 	    $(pnmtops_nosetpage) -noturn -rle >$@ ; \
 	fi
 
-pdfroff: pdfroff.sh
+pdfroff: pdfroff.sh $(SH_DEPS_SED_SCRIPT)
 	$(RM) $@
-	sed -e "s|@VERSION@|$(version)$(revision)|" \
+	sed -f $(SH_DEPS_SED_SCRIPT) \
+	    -e "s|@VERSION@|$(version)$(revision)|" \
 	    -e "s|@GROFF_AWK_INTERPRETERS@|$(ALT_AWK_PROGS)|" \
 	    -e "s|@GROFF_GHOSTSCRIPT_INTERPRETERS@|$(ALT_GHOSTSCRIPT_PROGS)|" \
-	    -e "s|@GROFF_BIN_DIR@|$(bindir)|" $^ >$@
+	    -e "s|@GROFF_BIN_DIR@|$(bindir)|" $(srcdir)/pdfroff.sh >$@
 	chmod +x $@
 
 install_data: $(make_install_pdfdoc)
diff --git a/contrib/pdfmark/pdfroff.man b/contrib/pdfmark/pdfroff.man
index a1cc2732..7d83cdd9 100644
--- a/contrib/pdfmark/pdfroff.man
+++ b/contrib/pdfmark/pdfroff.man
@@ -420,6 +420,30 @@ if none of these are found,
 will issue a warning message, and continue processing;
 however, in this case, no reference dictionary will be created.
 .TP
+.B OSTYPE
+Typically defined automatically by the operating system,
+.B OSTYPE
+is used on Microsoft Win32/MS\(hyDOS platforms
+.IR only ,
+to infer the default
+.B PATH_SEPARATOR
+character,
+which is used when parsing the process
+.B PATH
+to search for external helper programs.
+.TP
+.B PATH_SEPARATOR
+If set,
+.B PATH_SEPARATOR
+overrides the default separator character,
+(':' on POSIX/UNIX systems,
+inferred from
+.B OSTYPE
+on Microsoft Win32/MS\(hyDOS),
+which is used when parsing the process
+.B PATH
+to search for external helper programs.
+.TP
 .B SHOW_PROGRESS
 If this is set to a non-empty value, then
 .B pdfroff
diff --git a/contrib/pdfmark/pdfroff.sh b/contrib/pdfmark/pdfroff.sh
index abb18926..8acff214 100644
--- a/contrib/pdfmark/pdfroff.sh
+++ b/contrib/pdfmark/pdfroff.sh
@@ -1,4 +1,4 @@
-#!/bin/sh
+#! /bin/sh
 # ------------------------------------------------------------------------------
 #
 # Function: Format PDF Output from groff Markup
@@ -37,36 +37,66 @@
 #
   CMD=`exec 2>$NULLDEV; basename $0` || CMD=$0
 #
+# To ensure that prerequisite helper programs are available, and are
+# executable, a [fairly] portable method of detecting such programs is
+# provided by function `searchpath'.
+#
+  searchpath(){
+  #
+  # Usage:  searchpath progname path
+  #
+    IFS="${PATH_SEPARATOR-":"}" prog=':'
+    for dir in $2
+    do
+      for ext in '' '.exe'
+      #
+      # try `progname' with all well known extensions
+      # (e.g. Win32 may require `progname.exe')
+      #
+      do
+        try="$dir/$1$ext"
+        test -f "$try" && test -x "$try" && prog="$try" && break
+      done
+      test "$prog" = ":" || break
+    done
+    echo "$prog"
+  }
+# @PATH_SEARCH_SETUP@
+#
 # We need both 'grep' and 'sed' programs, to parse script options,
 # and we also need 'cat', to display help and some error messages,
 # so ensure they are all installed, before we continue.
-# (Again, note that we first check the status from 'type', BEFORE
-#  we attempt to use the result, because Cygwin's 'ash' uses 'stdout'
-#  instead of 'stderr', to display its 'not found' message).
 #
-  CAT=':' GREP=':' SED=':'
-  type cat >$NULLDEV 2>&1 && CAT=`set :\`type cat\` ; eval echo '$'$#`
-  type grep >$NULLDEV 2>&1 && GREP=`set :\`type grep\` ; eval echo '$'$#`
-  type sed >$NULLDEV 2>&1 && SED=`set :\`type sed\` ; eval echo '$'$#`
+  CAT=`searchpath cat "$PATH"`
+  GREP=`searchpath grep "$PATH"`
+  SED=`searchpath sed "$PATH"`
 #
 # Another fundamental requirement is the 'groff' program itself;
-# we will first perform a PATH search to locate this;  however,
-# we will prefer any version existing in a specified GROFF_BIN_DIR,
-# or, if unspecified, the installed location of 'groff' programs;
-# (this will override the result of the initial PATH search).
+# we MUST use a 'groff' program located in 'GROFF_BIN_DIR', if this
+# is specified; if not, we will search 'GROFF_BIN_PATH', only falling
+# back to a 'PATH' search, if neither of these is specified.
+#
+  if test -n "$GROFF_BIN_DIR"
+  then
+    GPATH=GROFF_BIN_DIR
+    GROFF=`searchpath groff "$GROFF_BIN_DIR"`
 #
-  GROFF=':'
-  type groff >$NULLDEV 2>&1 && GROFF=`set :\`type groff\` ; eval echo '$'$#`
-  type ${GROFF_BIN_DIR="@GROFF_BIN_DIR@"}/groff >$NULLDEV 2>&1 \
-    && GROFF=`set :\`type $GROFF_BIN_DIR/groff\` ; eval echo '$'$#`
+  elif test -n "$GROFF_BIN_PATH"
+  then
+    GPATH=GROFF_BIN_PATH
+    GROFF=`searchpath groff "$GROFF_BIN_PATH"`
+#
+  else
+    GPATH=PATH
+    GROFF=`searchpath groff "$PATH"`
+  fi
 #
 # If one or more of these is missing, diagnose and bail out.
 #
-  NO=''
-  NOPROG="$CMD: installation problem: cannot find program"
+  NO='' NOPROG="$CMD: installation problem: cannot find program"
   test "$CAT" = ":" && echo >&2 "$NOPROG 'cat' in PATH" && NO="$NO 'cat'"
   test "$GREP" = ":" && echo >&2 "$NOPROG 'grep' in PATH" && NO="$NO 'grep'"
-  test "$GROFF" = ":" && echo >&2 "$NOPROG 'groff' in $GBIN" && NO="$NO 'groff'"
+  test "$GROFF" = ":" && echo >&2 "$NOPROG 'groff' in $GPATH" && NO="$NO 'groff'"
   test "$SED" = ":" && echo >&2 "$NOPROG 'sed' in PATH" && NO="$NO 'sed'"
   if test -n "$NO"
   then
@@ -349,15 +379,19 @@
 #   In order to correctly resolve 'pdfmark' references,
 #   we need to have both the 'awk' and 'diff' programs available.
 #
-    NO='' AWK=':'
-    eval set ${GROFF_AWK_INTERPRETER-"@GROFF_AWK_INTERPRETERS@"}
-    while test $# -gt 0
-    do
-      type $1 >$NULLDEV 2>&1 && AWK=`set :\`type $1\` ; eval echo '$'$#`
-      test "$AWK" = ":" || set "$AWK"
-      shift
-    done
-    type diff >$NULLDEV 2>&1 && DIFF=`set :\`type diff\` ; eval echo '$'$#`
+    NO=''
+    if test -n "$GROFF_AWK_INTERPRETER"
+    then
+      AWK="$GROFF_AWK_INTERPRETER"
+      test -f "$AWK" && test -x "$AWK" || AWK=":"
+    else
+      for prog in @GROFF_AWK_INTERPRETERS@
+      do
+	AWK=`searchpath $prog "$PATH"`
+	test "$AWK" = ":" || break
+      done
+    fi
+    DIFF=`searchpath diff "$PATH"`
     test "$AWK" = ":" && echo >&2 "$NOPROG 'awk' in PATH" && NO="$NO 'awk'"
     test "$DIFF" = ":" && echo >&2 "$NOPROG 'diff' in PATH" && NO="$NO 'diff'"
     if test -n "$NO"
@@ -443,14 +477,17 @@
 # from which the PDF output will be compiled -- but before proceding further ...
 # let's make sure we have a GhostScript interpreter to convert them!
 #
-  GS=':'
-  eval set ${GROFF_GHOSTSCRIPT_INTERPRETER-"@GROFF_GHOSTSCRIPT_INTERPRETERS@"}
-  while test $# -gt 0
-  do
-    type $1 >$NULLDEV 2>&1 && GS=`set :\`type $1\` ; eval echo '$'$#`
-    test "$GS" = ":" || set "$GS"
-    shift
-  done
+  if test -n "$GROFF_GHOSTSCRIPT_INTERPRETER"
+  then
+    GS="$GROFF_GHOSTSCRIPT_INTERPRETER"
+    test -f "$GS" && test -x "$GS" || GS=":"
+  else
+    for prog in @GROFF_GHOSTSCRIPT_INTERPRETERS@
+    do
+      GS=`searchpath $prog "$PATH"`
+      test "$GS" = ":" || break
+    done
+  fi
 #
 # If we could not find a GhostScript interpreter, then we can do no more.
 #
diff --git a/contrib/pic2graph/pic2graph.sh b/contrib/pic2graph/pic2graph.sh
index 9620f692..5a066cef 100644
--- a/contrib/pic2graph/pic2graph.sh
+++ b/contrib/pic2graph/pic2graph.sh
@@ -1,4 +1,4 @@
-#!/bin/sh
+#! /bin/sh
 #
 # pic2graph -- compile PIC image descriptions to bitmap images
 #
@@ -32,7 +32,7 @@
 # We don't have complete option coverage on eqn because this is primarily
 # intended as a pic translator; we can live with eqn defaults. 
 #
-# $Id: pic2graph.sh,v 1.6 2005/05/17 20:20:53 wl Exp $
+# $Id: pic2graph.sh,v 1.7 2005/05/18 07:03:07 wl Exp $
 #
 groffpic_opts=""
 gs_opts=""
diff --git a/font/devps/generate/afmname b/font/devps/generate/afmname
index 3e837df2..7d193493 100755
--- a/font/devps/generate/afmname
+++ b/font/devps/generate/afmname
@@ -1,4 +1,4 @@
-#!/bin/sh
+#! /bin/sh
 # Fix the path name of an AFM file.
 if test -f "$1"
 then
diff --git a/src/devices/xditview/ad2c b/src/devices/xditview/ad2c
index 43551ae8..ad5d1215 100644
--- a/src/devices/xditview/ad2c
+++ b/src/devices/xditview/ad2c
@@ -1,4 +1,4 @@
-#!/bin/sh
+#! /bin/sh
 #
 #	ad2c : Convert app-defaults file to C strings decls.
 #
diff --git a/src/preproc/eqn/neqn.sh b/src/preproc/eqn/neqn.sh
index f2b5fdfc..f22a2baa 100644
--- a/src/preproc/eqn/neqn.sh
+++ b/src/preproc/eqn/neqn.sh
@@ -1,4 +1,4 @@
-#!/bin/sh
+#! /bin/sh
 # Provision of this shell script should not be taken to imply that use of
 # GNU eqn with groff -Tascii|-Tlatin1|-Tutf8|-Tcp1047 is supported.
 
diff --git a/src/roff/grog/grog.pl b/src/roff/grog/grog.pl
index 07fa7a44..b802fd56 100644
--- a/src/roff/grog/grog.pl
+++ b/src/roff/grog/grog.pl
@@ -1,4 +1,4 @@
-#!/usr/bin/perl
+#! /usr/bin/perl
 # grog -- guess options for groff command
 # Inspired by doctype script in Kernighan & Pike, Unix Programming
 # Environment, pp 306-8.
diff --git a/src/roff/grog/grog.sh b/src/roff/grog/grog.sh
index 3999d77d..1a937cb1 100644
--- a/src/roff/grog/grog.sh
+++ b/src/roff/grog/grog.sh
@@ -1,4 +1,4 @@
-#!/bin/sh
+#! /bin/sh
 # grog -- guess options for groff command
 # Like doctype in Kernighan & Pike, Unix Programming Environment, pp 306-8.
 
diff --git a/src/roff/nroff/nroff.sh b/src/roff/nroff/nroff.sh
index 6eac45bf..cc63fa7a 100644
--- a/src/roff/nroff/nroff.sh
+++ b/src/roff/nroff/nroff.sh
@@ -1,4 +1,4 @@
-#!/bin/sh
+#! /bin/sh
 # Emulate nroff with groff.
 
 prog="$0"