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[automake-commit] 01/02: maint: Update files from upstream with 'make fe


From: Jim Meyering
Subject: [automake-commit] 01/02: maint: Update files from upstream with 'make fetch'
Date: Mon, 16 Nov 2020 10:48:12 -0500

meyering pushed a commit to branch master
in repository automake.

View the commit online:
https://git.savannah.gnu.org/gitweb/?p=automake.git;a=commitdiff;h=3b2633fb9dafd11898dacbafa715bfea8fa15a53

commit 3b2633fb9dafd11898dacbafa715bfea8fa15a53
Author: Jim Meyering <meyering@fb.com>
AuthorDate: Sun Nov 15 21:42:14 2020 -0800

    maint: Update files from upstream with 'make fetch'
    
    * lib/config.guess: Update.
    * lib/config.sub: Likewise.
    * lib/texinfo.tex: Likewise.
---
 lib/config.guess | 199 +++++++++++++++++++++++++++----------------------------
 lib/config.sub   |  56 ++++++++--------
 lib/texinfo.tex  |  63 ++++++++++++++----
 3 files changed, 179 insertions(+), 139 deletions(-)

diff --git a/lib/config.guess b/lib/config.guess
index 9aff91c..0fc11ed 100755
--- a/lib/config.guess
+++ b/lib/config.guess
@@ -2,7 +2,7 @@
 # Attempt to guess a canonical system name.
 #   Copyright 1992-2020 Free Software Foundation, Inc.
 
-timestamp='2020-08-17'
+timestamp='2020-11-07'
 
 # This file is free software; you can redistribute it and/or modify it
 # under the terms of the GNU General Public License as published by
@@ -32,7 +32,7 @@ timestamp='2020-08-17'
 # Please send patches to <config-patches@gnu.org>.
 
 
-me=`echo "$0" | sed -e 's,.*/,,'`
+me=$(echo "$0" | sed -e 's,.*/,,')
 
 usage="\
 Usage: $0 [OPTION]
@@ -103,7 +103,7 @@ set_cc_for_build() {
     test "$tmp" && return 0
     : "${TMPDIR=/tmp}"
     # shellcheck disable=SC2039
-    { tmp=`(umask 077 && mktemp -d "$TMPDIR/cgXXXXXX") 2>/dev/null` && test -n 
"$tmp" && test -d "$tmp" ; } ||
+    { tmp=$( (umask 077 && mktemp -d "$TMPDIR/cgXXXXXX") 2>/dev/null) && test 
-n "$tmp" && test -d "$tmp" ; } ||
        { test -n "$RANDOM" && tmp=$TMPDIR/cg$$-$RANDOM && (umask 077 && mkdir 
"$tmp" 2>/dev/null) ; } ||
        { tmp=$TMPDIR/cg-$$ && (umask 077 && mkdir "$tmp" 2>/dev/null) && echo 
"Warning: creating insecure temp directory" >&2 ; } ||
        { echo "$me: cannot create a temporary directory in $TMPDIR" >&2 ; exit 
1 ; }
@@ -131,10 +131,10 @@ if test -f /.attbin/uname ; then
        PATH=$PATH:/.attbin ; export PATH
 fi
 
-UNAME_MACHINE=`(uname -m) 2>/dev/null` || UNAME_MACHINE=unknown
-UNAME_RELEASE=`(uname -r) 2>/dev/null` || UNAME_RELEASE=unknown
-UNAME_SYSTEM=`(uname -s) 2>/dev/null`  || UNAME_SYSTEM=unknown
-UNAME_VERSION=`(uname -v) 2>/dev/null` || UNAME_VERSION=unknown
+UNAME_MACHINE=$( (uname -m) 2>/dev/null) || UNAME_MACHINE=unknown
+UNAME_RELEASE=$( (uname -r) 2>/dev/null) || UNAME_RELEASE=unknown
+UNAME_SYSTEM=$( (uname -s) 2>/dev/null) || UNAME_SYSTEM=unknown
+UNAME_VERSION=$( (uname -v) 2>/dev/null) || UNAME_VERSION=unknown
 
 case "$UNAME_SYSTEM" in
 Linux|GNU|GNU/*)
@@ -150,17 +150,15 @@ Linux|GNU|GNU/*)
        #elif defined(__dietlibc__)
        LIBC=dietlibc
        #else
+       #include <stdarg.h>
+       #ifdef __DEFINED_va_list
+       LIBC=musl
+       #else
        LIBC=gnu
        #endif
+       #endif
        EOF
-       eval "`$CC_FOR_BUILD -E "$dummy.c" 2>/dev/null | grep '^LIBC' | sed 's, 
,,g'`"
-
-       # If ldd exists, use it to detect musl libc.
-       if command -v ldd >/dev/null && \
-               ldd --version 2>&1 | grep -q ^musl
-       then
-           LIBC=musl
-       fi
+       eval "$($CC_FOR_BUILD -E "$dummy.c" 2>/dev/null | grep '^LIBC' | sed 
's, ,,g')"
        ;;
 esac
 
@@ -179,19 +177,20 @@ case 
"$UNAME_MACHINE:$UNAME_SYSTEM:$UNAME_RELEASE:$UNAME_VERSION" in
        # Note: NetBSD doesn't particularly care about the vendor
        # portion of the name.  We always set it to "unknown".
        sysctl="sysctl -n hw.machine_arch"
-       UNAME_MACHINE_ARCH=`(uname -p 2>/dev/null || \
+       UNAME_MACHINE_ARCH=$( (uname -p 2>/dev/null || \
            "/sbin/$sysctl" 2>/dev/null || \
            "/usr/sbin/$sysctl" 2>/dev/null || \
-           echo unknown)`
+           echo unknown))
        case "$UNAME_MACHINE_ARCH" in
+           aarch64eb) machine=aarch64_be-unknown ;;
            armeb) machine=armeb-unknown ;;
            arm*) machine=arm-unknown ;;
            sh3el) machine=shl-unknown ;;
            sh3eb) machine=sh-unknown ;;
            sh5el) machine=sh5le-unknown ;;
            earmv*)
-               arch=`echo "$UNAME_MACHINE_ARCH" | sed -e 
's,^e\(armv[0-9]\).*$,\1,'`
-               endian=`echo "$UNAME_MACHINE_ARCH" | sed -ne 
's,^.*\(eb\)$,\1,p'`
+               arch=$(echo "$UNAME_MACHINE_ARCH" | sed -e 
's,^e\(armv[0-9]\).*$,\1,')
+               endian=$(echo "$UNAME_MACHINE_ARCH" | sed -ne 
's,^.*\(eb\)$,\1,p')
                machine="${arch}${endian}"-unknown
                ;;
            *) machine="$UNAME_MACHINE_ARCH"-unknown ;;
@@ -222,7 +221,7 @@ case 
"$UNAME_MACHINE:$UNAME_SYSTEM:$UNAME_RELEASE:$UNAME_VERSION" in
        case "$UNAME_MACHINE_ARCH" in
            earm*)
                expr='s/^earmv[0-9]/-eabi/;s/eb$//'
-               abi=`echo "$UNAME_MACHINE_ARCH" | sed -e "$expr"`
+               abi=$(echo "$UNAME_MACHINE_ARCH" | sed -e "$expr")
                ;;
        esac
        # The OS release
@@ -235,7 +234,7 @@ case 
"$UNAME_MACHINE:$UNAME_SYSTEM:$UNAME_RELEASE:$UNAME_VERSION" in
                release='-gnu'
                ;;
            *)
-               release=`echo "$UNAME_RELEASE" | sed -e 's/[-_].*//' | cut -d. 
-f1,2`
+               release=$(echo "$UNAME_RELEASE" | sed -e 's/[-_].*//' | cut -d. 
-f1,2)
                ;;
        esac
        # Since CPU_TYPE-MANUFACTURER-KERNEL-OPERATING_SYSTEM:
@@ -244,15 +243,15 @@ case 
"$UNAME_MACHINE:$UNAME_SYSTEM:$UNAME_RELEASE:$UNAME_VERSION" in
        echo "$machine-${os}${release}${abi-}"
        exit ;;
     *:Bitrig:*:*)
-       UNAME_MACHINE_ARCH=`arch | sed 's/Bitrig.//'`
+       UNAME_MACHINE_ARCH=$(arch | sed 's/Bitrig.//')
        echo "$UNAME_MACHINE_ARCH"-unknown-bitrig"$UNAME_RELEASE"
        exit ;;
     *:OpenBSD:*:*)
-       UNAME_MACHINE_ARCH=`arch | sed 's/OpenBSD.//'`
+       UNAME_MACHINE_ARCH=$(arch | sed 's/OpenBSD.//')
        echo "$UNAME_MACHINE_ARCH"-unknown-openbsd"$UNAME_RELEASE"
        exit ;;
     *:LibertyBSD:*:*)
-       UNAME_MACHINE_ARCH=`arch | sed 's/^.*BSD\.//'`
+       UNAME_MACHINE_ARCH=$(arch | sed 's/^.*BSD\.//')
        echo "$UNAME_MACHINE_ARCH"-unknown-libertybsd"$UNAME_RELEASE"
        exit ;;
     *:MidnightBSD:*:*)
@@ -288,17 +287,17 @@ case 
"$UNAME_MACHINE:$UNAME_SYSTEM:$UNAME_RELEASE:$UNAME_VERSION" in
     alpha:OSF1:*:*)
        case $UNAME_RELEASE in
        *4.0)
-               UNAME_RELEASE=`/usr/sbin/sizer -v | awk '{print $3}'`
+               UNAME_RELEASE=$(/usr/sbin/sizer -v | awk '{print $3}')
                ;;
        *5.*)
-               UNAME_RELEASE=`/usr/sbin/sizer -v | awk '{print $4}'`
+               UNAME_RELEASE=$(/usr/sbin/sizer -v | awk '{print $4}')
                ;;
        esac
        # According to Compaq, /usr/sbin/psrinfo has been available on
        # OSF/1 and Tru64 systems produced since 1995.  I hope that
        # covers most systems running today.  This code pipes the CPU
        # types through head -n 1, so we only detect the type of CPU 0.
-       ALPHA_CPU_TYPE=`/usr/sbin/psrinfo -v | sed -n -e 's/^  The alpha \(.*\) 
processor.*$/\1/p' | head -n 1`
+       ALPHA_CPU_TYPE=$(/usr/sbin/psrinfo -v | sed -n -e 's/^  The alpha 
\(.*\) processor.*$/\1/p' | head -n 1)
        case "$ALPHA_CPU_TYPE" in
            "EV4 (21064)")
                UNAME_MACHINE=alpha ;;
@@ -336,7 +335,7 @@ case 
"$UNAME_MACHINE:$UNAME_SYSTEM:$UNAME_RELEASE:$UNAME_VERSION" in
        # A Tn.n version is a released field test version.
        # A Xn.n version is an unreleased experimental baselevel.
        # 1.2 uses "1.2" for uname -r.
-       echo "$UNAME_MACHINE"-dec-osf"`echo "$UNAME_RELEASE" | sed -e 
's/^[PVTX]//' | tr ABCDEFGHIJKLMNOPQRSTUVWXYZ abcdefghijklmnopqrstuvwxyz`"
+       echo "$UNAME_MACHINE"-dec-osf"$(echo "$UNAME_RELEASE" | sed -e 
's/^[PVTX]//' | tr ABCDEFGHIJKLMNOPQRSTUVWXYZ abcdefghijklmnopqrstuvwxyz)"
        # Reset EXIT trap before exiting to avoid spurious non-zero exit code.
        exitcode=$?
        trap '' 0
@@ -370,7 +369,7 @@ case 
"$UNAME_MACHINE:$UNAME_SYSTEM:$UNAME_RELEASE:$UNAME_VERSION" in
        exit ;;
     Pyramid*:OSx*:*:* | MIS*:OSx*:*:* | MIS*:SMP_DC-OSx*:*:*)
        # akee@wpdis03.wpafb.af.mil (Earle F. Ake) contributed MIS and NILE.
-       if test "`(/bin/universe) 2>/dev/null`" = att ; then
+       if test "$( (/bin/universe) 2>/dev/null)" = att ; then
                echo pyramid-pyramid-sysv3
        else
                echo pyramid-pyramid-bsd
@@ -383,17 +382,17 @@ case 
"$UNAME_MACHINE:$UNAME_SYSTEM:$UNAME_RELEASE:$UNAME_VERSION" in
        echo sparc-icl-nx6
        exit ;;
     DRS?6000:UNIX_SV:4.2*:7* | DRS?6000:isis:4.2*:7*)
-       case `/usr/bin/uname -p` in
+       case $(/usr/bin/uname -p) in
            sparc) echo sparc-icl-nx7; exit ;;
        esac ;;
     s390x:SunOS:*:*)
-       echo "$UNAME_MACHINE"-ibm-solaris2"`echo "$UNAME_RELEASE" | sed -e 
's/[^.]*//'`"
+       echo "$UNAME_MACHINE"-ibm-solaris2"$(echo "$UNAME_RELEASE" | sed -e 
's/[^.]*//')"
        exit ;;
     sun4H:SunOS:5.*:*)
-       echo sparc-hal-solaris2"`echo "$UNAME_RELEASE"|sed -e 's/[^.]*//'`"
+       echo sparc-hal-solaris2"$(echo "$UNAME_RELEASE"|sed -e 's/[^.]*//')"
        exit ;;
     sun4*:SunOS:5.*:* | tadpole*:SunOS:5.*:*)
-       echo sparc-sun-solaris2"`echo "$UNAME_RELEASE" | sed -e 's/[^.]*//'`"
+       echo sparc-sun-solaris2"$(echo "$UNAME_RELEASE" | sed -e 's/[^.]*//')"
        exit ;;
     i86pc:AuroraUX:5.*:* | i86xen:AuroraUX:5.*:*)
        echo i386-pc-auroraux"$UNAME_RELEASE"
@@ -412,30 +411,30 @@ case 
"$UNAME_MACHINE:$UNAME_SYSTEM:$UNAME_RELEASE:$UNAME_VERSION" in
                SUN_ARCH=x86_64
            fi
        fi
-       echo "$SUN_ARCH"-pc-solaris2"`echo "$UNAME_RELEASE"|sed -e 's/[^.]*//'`"
+       echo "$SUN_ARCH"-pc-solaris2"$(echo "$UNAME_RELEASE"|sed -e 
's/[^.]*//')"
        exit ;;
     sun4*:SunOS:6*:*)
        # According to config.sub, this is the proper way to canonicalize
        # SunOS6.  Hard to guess exactly what SunOS6 will be like, but
        # it's likely to be more like Solaris than SunOS4.
-       echo sparc-sun-solaris3"`echo "$UNAME_RELEASE"|sed -e 's/[^.]*//'`"
+       echo sparc-sun-solaris3"$(echo "$UNAME_RELEASE"|sed -e 's/[^.]*//')"
        exit ;;
     sun4*:SunOS:*:*)
-       case "`/usr/bin/arch -k`" in
+       case "$(/usr/bin/arch -k)" in
            Series*|S4*)
-               UNAME_RELEASE=`uname -v`
+               UNAME_RELEASE=$(uname -v)
                ;;
        esac
        # Japanese Language versions have a version number like `4.1.3-JL'.
-       echo sparc-sun-sunos"`echo "$UNAME_RELEASE"|sed -e 's/-/_/'`"
+       echo sparc-sun-sunos"$(echo "$UNAME_RELEASE"|sed -e 's/-/_/')"
        exit ;;
     sun3*:SunOS:*:*)
        echo m68k-sun-sunos"$UNAME_RELEASE"
        exit ;;
     sun*:*:4.2BSD:*)
-       UNAME_RELEASE=`(sed 1q /etc/motd | awk '{print substr($5,1,3)}') 
2>/dev/null`
+       UNAME_RELEASE=$( (sed 1q /etc/motd | awk '{print substr($5,1,3)}') 
2>/dev/null)
        test "x$UNAME_RELEASE" = x && UNAME_RELEASE=3
-       case "`/bin/arch`" in
+       case "$(/bin/arch)" in
            sun3)
                echo m68k-sun-sunos"$UNAME_RELEASE"
                ;;
@@ -515,8 +514,8 @@ case 
"$UNAME_MACHINE:$UNAME_SYSTEM:$UNAME_RELEASE:$UNAME_VERSION" in
        }
 EOF
        $CC_FOR_BUILD -o "$dummy" "$dummy.c" &&
-         dummyarg=`echo "$UNAME_RELEASE" | sed -n 's/\([0-9]*\).*/\1/p'` &&
-         SYSTEM_NAME=`"$dummy" "$dummyarg"` &&
+         dummyarg=$(echo "$UNAME_RELEASE" | sed -n 's/\([0-9]*\).*/\1/p') &&
+         SYSTEM_NAME=$("$dummy" "$dummyarg") &&
            { echo "$SYSTEM_NAME"; exit; }
        echo mips-mips-riscos"$UNAME_RELEASE"
        exit ;;
@@ -543,7 +542,7 @@ EOF
        exit ;;
     AViiON:dgux:*:*)
        # DG/UX returns AViiON for all architectures
-       UNAME_PROCESSOR=`/usr/bin/uname -p`
+       UNAME_PROCESSOR=$(/usr/bin/uname -p)
        if test "$UNAME_PROCESSOR" = mc88100 || test "$UNAME_PROCESSOR" = 
mc88110
        then
            if test "$TARGET_BINARY_INTERFACE"x = m88kdguxelfx || \
@@ -571,17 +570,17 @@ EOF
        echo m68k-tektronix-bsd
        exit ;;
     *:IRIX*:*:*)
-       echo mips-sgi-irix"`echo "$UNAME_RELEASE"|sed -e 's/-/_/g'`"
+       echo mips-sgi-irix"$(echo "$UNAME_RELEASE"|sed -e 's/-/_/g')"
        exit ;;
     ????????:AIX?:[12].1:2)   # AIX 2.2.1 or AIX 2.1.1 is RT/PC AIX.
        echo romp-ibm-aix     # uname -m gives an 8 hex-code CPU id
-       exit ;;               # Note that: echo "'`uname -s`'" gives 'AIX '
+       exit ;;               # Note that: echo "'$(uname -s)'" gives 'AIX '
     i*86:AIX:*:*)
        echo i386-ibm-aix
        exit ;;
     ia64:AIX:*:*)
        if test -x /usr/bin/oslevel ; then
-               IBM_REV=`/usr/bin/oslevel`
+               IBM_REV=$(/usr/bin/oslevel)
        else
                IBM_REV="$UNAME_VERSION.$UNAME_RELEASE"
        fi
@@ -601,7 +600,7 @@ EOF
                        exit(0);
                        }
 EOF
-               if $CC_FOR_BUILD -o "$dummy" "$dummy.c" && 
SYSTEM_NAME=`"$dummy"`
+               if $CC_FOR_BUILD -o "$dummy" "$dummy.c" && 
SYSTEM_NAME=$("$dummy")
                then
                        echo "$SYSTEM_NAME"
                else
@@ -614,15 +613,15 @@ EOF
        fi
        exit ;;
     *:AIX:*:[4567])
-       IBM_CPU_ID=`/usr/sbin/lsdev -C -c processor -S available | sed 1q | awk 
'{ print $1 }'`
+       IBM_CPU_ID=$(/usr/sbin/lsdev -C -c processor -S available | sed 1q | 
awk '{ print $1 }')
        if /usr/sbin/lsattr -El "$IBM_CPU_ID" | grep ' POWER' >/dev/null 2>&1; 
then
                IBM_ARCH=rs6000
        else
                IBM_ARCH=powerpc
        fi
        if test -x /usr/bin/lslpp ; then
-               IBM_REV=`/usr/bin/lslpp -Lqc bos.rte.libc |
-                          awk -F: '{ print $3 }' | sed s/[0-9]*$/0/`
+               IBM_REV=$(/usr/bin/lslpp -Lqc bos.rte.libc |
+                          awk -F: '{ print $3 }' | sed s/[0-9]*$/0/)
        else
                IBM_REV="$UNAME_VERSION.$UNAME_RELEASE"
        fi
@@ -650,14 +649,14 @@ EOF
        echo m68k-hp-bsd4.4
        exit ;;
     9000/[34678]??:HP-UX:*:*)
-       HPUX_REV=`echo "$UNAME_RELEASE"|sed -e 's/[^.]*.[0B]*//'`
+       HPUX_REV=$(echo "$UNAME_RELEASE"|sed -e 's/[^.]*.[0B]*//')
        case "$UNAME_MACHINE" in
            9000/31?)            HP_ARCH=m68000 ;;
            9000/[34]??)         HP_ARCH=m68k ;;
            9000/[678][0-9][0-9])
                if test -x /usr/bin/getconf; then
-                   sc_cpu_version=`/usr/bin/getconf SC_CPU_VERSION 2>/dev/null`
-                   sc_kernel_bits=`/usr/bin/getconf SC_KERNEL_BITS 2>/dev/null`
+                   sc_cpu_version=$(/usr/bin/getconf SC_CPU_VERSION 
2>/dev/null)
+                   sc_kernel_bits=$(/usr/bin/getconf SC_KERNEL_BITS 
2>/dev/null)
                    case "$sc_cpu_version" in
                      523) HP_ARCH=hppa1.0 ;; # CPU_PA_RISC1_0
                      528) HP_ARCH=hppa1.1 ;; # CPU_PA_RISC1_1
@@ -704,7 +703,7 @@ EOF
                    exit (0);
                }
 EOF
-                   (CCOPTS="" $CC_FOR_BUILD -o "$dummy" "$dummy.c" 
2>/dev/null) && HP_ARCH=`"$dummy"`
+                   (CCOPTS="" $CC_FOR_BUILD -o "$dummy" "$dummy.c" 
2>/dev/null) && HP_ARCH=$("$dummy")
                    test -z "$HP_ARCH" && HP_ARCH=hppa
                fi ;;
        esac
@@ -732,7 +731,7 @@ EOF
        echo "$HP_ARCH"-hp-hpux"$HPUX_REV"
        exit ;;
     ia64:HP-UX:*:*)
-       HPUX_REV=`echo "$UNAME_RELEASE"|sed -e 's/[^.]*.[0B]*//'`
+       HPUX_REV=$(echo "$UNAME_RELEASE"|sed -e 's/[^.]*.[0B]*//')
        echo ia64-hp-hpux"$HPUX_REV"
        exit ;;
     3050*:HI-UX:*:*)
@@ -762,7 +761,7 @@ EOF
          exit (0);
        }
 EOF
-       $CC_FOR_BUILD -o "$dummy" "$dummy.c" && SYSTEM_NAME=`"$dummy"` &&
+       $CC_FOR_BUILD -o "$dummy" "$dummy.c" && SYSTEM_NAME=$("$dummy") &&
                { echo "$SYSTEM_NAME"; exit; }
        echo unknown-hitachi-hiuxwe2
        exit ;;
@@ -831,14 +830,14 @@ EOF
        echo craynv-cray-unicosmp"$UNAME_RELEASE" | sed -e 's/\.[^.]*$/.X/'
        exit ;;
     F30[01]:UNIX_System_V:*:* | F700:UNIX_System_V:*:*)
-       FUJITSU_PROC=`uname -m | tr ABCDEFGHIJKLMNOPQRSTUVWXYZ 
abcdefghijklmnopqrstuvwxyz`
-       FUJITSU_SYS=`uname -p | tr ABCDEFGHIJKLMNOPQRSTUVWXYZ 
abcdefghijklmnopqrstuvwxyz | sed -e 's/\///'`
-       FUJITSU_REL=`echo "$UNAME_RELEASE" | sed -e 's/ /_/'`
+       FUJITSU_PROC=$(uname -m | tr ABCDEFGHIJKLMNOPQRSTUVWXYZ 
abcdefghijklmnopqrstuvwxyz)
+       FUJITSU_SYS=$(uname -p | tr ABCDEFGHIJKLMNOPQRSTUVWXYZ 
abcdefghijklmnopqrstuvwxyz | sed -e 's/\///')
+       FUJITSU_REL=$(echo "$UNAME_RELEASE" | sed -e 's/ /_/')
        echo "${FUJITSU_PROC}-fujitsu-${FUJITSU_SYS}${FUJITSU_REL}"
        exit ;;
     5000:UNIX_System_V:4.*:*)
-       FUJITSU_SYS=`uname -p | tr ABCDEFGHIJKLMNOPQRSTUVWXYZ 
abcdefghijklmnopqrstuvwxyz | sed -e 's/\///'`
-       FUJITSU_REL=`echo "$UNAME_RELEASE" | tr ABCDEFGHIJKLMNOPQRSTUVWXYZ 
abcdefghijklmnopqrstuvwxyz | sed -e 's/ /_/'`
+       FUJITSU_SYS=$(uname -p | tr ABCDEFGHIJKLMNOPQRSTUVWXYZ 
abcdefghijklmnopqrstuvwxyz | sed -e 's/\///')
+       FUJITSU_REL=$(echo "$UNAME_RELEASE" | tr ABCDEFGHIJKLMNOPQRSTUVWXYZ 
abcdefghijklmnopqrstuvwxyz | sed -e 's/ /_/')
        echo "sparc-fujitsu-${FUJITSU_SYS}${FUJITSU_REL}"
        exit ;;
     i*86:BSD/386:*:* | i*86:BSD/OS:*:* | *:Ascend\ Embedded/OS:*:*)
@@ -851,25 +850,25 @@ EOF
        echo "$UNAME_MACHINE"-unknown-bsdi"$UNAME_RELEASE"
        exit ;;
     arm:FreeBSD:*:*)
-       UNAME_PROCESSOR=`uname -p`
+       UNAME_PROCESSOR=$(uname -p)
        set_cc_for_build
        if echo __ARM_PCS_VFP | $CC_FOR_BUILD -E - 2>/dev/null \
            | grep -q __ARM_PCS_VFP
        then
-           echo "${UNAME_PROCESSOR}"-unknown-freebsd"`echo 
${UNAME_RELEASE}|sed -e 's/[-(].*//'`"-gnueabi
+           echo "${UNAME_PROCESSOR}"-unknown-freebsd"$(echo 
${UNAME_RELEASE}|sed -e 's/[-(].*//')"-gnueabi
        else
-           echo "${UNAME_PROCESSOR}"-unknown-freebsd"`echo 
${UNAME_RELEASE}|sed -e 's/[-(].*//'`"-gnueabihf
+           echo "${UNAME_PROCESSOR}"-unknown-freebsd"$(echo 
${UNAME_RELEASE}|sed -e 's/[-(].*//')"-gnueabihf
        fi
        exit ;;
     *:FreeBSD:*:*)
-       UNAME_PROCESSOR=`/usr/bin/uname -p`
+       UNAME_PROCESSOR=$(/usr/bin/uname -p)
        case "$UNAME_PROCESSOR" in
            amd64)
                UNAME_PROCESSOR=x86_64 ;;
            i386)
                UNAME_PROCESSOR=i586 ;;
        esac
-       echo "$UNAME_PROCESSOR"-unknown-freebsd"`echo "$UNAME_RELEASE"|sed -e 
's/[-(].*//'`"
+       echo "$UNAME_PROCESSOR"-unknown-freebsd"$(echo "$UNAME_RELEASE"|sed -e 
's/[-(].*//')"
        exit ;;
     i*:CYGWIN*:*)
        echo "$UNAME_MACHINE"-pc-cygwin
@@ -905,15 +904,15 @@ EOF
        echo x86_64-pc-cygwin
        exit ;;
     prep*:SunOS:5.*:*)
-       echo powerpcle-unknown-solaris2"`echo "$UNAME_RELEASE"|sed -e 
's/[^.]*//'`"
+       echo powerpcle-unknown-solaris2"$(echo "$UNAME_RELEASE"|sed -e 
's/[^.]*//')"
        exit ;;
     *:GNU:*:*)
        # the GNU system
-       echo "`echo "$UNAME_MACHINE"|sed -e 's,[-/].*$,,'`-unknown-$LIBC`echo 
"$UNAME_RELEASE"|sed -e 's,/.*$,,'`"
+       echo "$(echo "$UNAME_MACHINE"|sed -e 's,[-/].*$,,')-unknown-$LIBC$(echo 
"$UNAME_RELEASE"|sed -e 's,/.*$,,')"
        exit ;;
     *:GNU/*:*:*)
        # other systems with GNU libc and userland
-       echo "$UNAME_MACHINE-unknown-`echo "$UNAME_SYSTEM" | sed 's,^[^/]*/,,' 
| tr "[:upper:]" "[:lower:]"``echo "$UNAME_RELEASE"|sed -e 's/[-(].*//'`-$LIBC"
+       echo "$UNAME_MACHINE-unknown-$(echo "$UNAME_SYSTEM" | sed 's,^[^/]*/,,' 
| tr "[:upper:]" "[:lower:]")$(echo "$UNAME_RELEASE"|sed -e 's/[-(].*//')-$LIBC"
        exit ;;
     *:Minix:*:*)
        echo "$UNAME_MACHINE"-unknown-minix
@@ -926,7 +925,7 @@ EOF
        echo "$UNAME_MACHINE"-unknown-linux-"$LIBC"
        exit ;;
     alpha:Linux:*:*)
-       case `sed -n '/^cpu model/s/^.*: \(.*\)/\1/p' /proc/cpuinfo 
2>/dev/null` in
+       case $(sed -n '/^cpu model/s/^.*: \(.*\)/\1/p' /proc/cpuinfo 
2>/dev/null) in
          EV5)   UNAME_MACHINE=alphaev5 ;;
          EV56)  UNAME_MACHINE=alphaev56 ;;
          PCA56) UNAME_MACHINE=alphapca56 ;;
@@ -1035,7 +1034,7 @@ EOF
        #endif
        #endif
 EOF
-       eval "`$CC_FOR_BUILD -E "$dummy.c" 2>/dev/null | grep 
'^CPU\|^MIPS_ENDIAN\|^LIBCABI'`"
+       eval "$($CC_FOR_BUILD -E "$dummy.c" 2>/dev/null | grep 
'^CPU\|^MIPS_ENDIAN\|^LIBCABI')"
        test "x$CPU" != x && { echo 
"$CPU${MIPS_ENDIAN}-unknown-linux-$LIBCABI"; exit; }
        ;;
     mips64el:Linux:*:*)
@@ -1055,7 +1054,7 @@ EOF
        exit ;;
     parisc:Linux:*:* | hppa:Linux:*:*)
        # Look for CPU level
-       case `grep '^cpu[^a-z]*:' /proc/cpuinfo 2>/dev/null | cut -d' ' -f2` in
+       case $(grep '^cpu[^a-z]*:' /proc/cpuinfo 2>/dev/null | cut -d' ' -f2) in
          PA7*) echo hppa1.1-unknown-linux-"$LIBC" ;;
          PA8*) echo hppa2.0-unknown-linux-"$LIBC" ;;
          *)    echo hppa-unknown-linux-"$LIBC" ;;
@@ -1145,7 +1144,7 @@ EOF
        echo "$UNAME_MACHINE"-pc-msdosdjgpp
        exit ;;
     i*86:*:4.*:*)
-       UNAME_REL=`echo "$UNAME_RELEASE" | sed 's/\/MP$//'`
+       UNAME_REL=$(echo "$UNAME_RELEASE" | sed 's/\/MP$//')
        if grep Novell /usr/include/link.h >/dev/null 2>/dev/null; then
                echo "$UNAME_MACHINE"-univel-sysv"$UNAME_REL"
        else
@@ -1154,7 +1153,7 @@ EOF
        exit ;;
     i*86:*:5:[678]*)
        # UnixWare 7.x, OpenUNIX and OpenServer 6.
-       case `/bin/uname -X | grep "^Machine"` in
+       case $(/bin/uname -X | grep "^Machine") in
            *486*)           UNAME_MACHINE=i486 ;;
            *Pentium)        UNAME_MACHINE=i586 ;;
            *Pent*|*Celeron) UNAME_MACHINE=i686 ;;
@@ -1163,10 +1162,10 @@ EOF
        exit ;;
     i*86:*:3.2:*)
        if test -f /usr/options/cb.name; then
-               UNAME_REL=`sed -n 's/.*Version //p' </usr/options/cb.name`
+               UNAME_REL=$(sed -n 's/.*Version //p' </usr/options/cb.name)
                echo "$UNAME_MACHINE"-pc-isc"$UNAME_REL"
        elif /bin/uname -X 2>/dev/null >/dev/null ; then
-               UNAME_REL=`(/bin/uname -X|grep Release|sed -e 's/.*= //')`
+               UNAME_REL=$( (/bin/uname -X|grep Release|sed -e 's/.*= //'))
                (/bin/uname -X|grep i80486 >/dev/null) && UNAME_MACHINE=i486
                (/bin/uname -X|grep '^Machine.*Pentium' >/dev/null) \
                        && UNAME_MACHINE=i586
@@ -1216,7 +1215,7 @@ EOF
     3[345]??:*:4.0:3.0 | 3[34]??A:*:4.0:3.0 | 3[34]??,*:*:4.0:3.0 | 
3[34]??/*:*:4.0:3.0 | 4400:*:4.0:3.0 | 4850:*:4.0:3.0 | SKA40:*:4.0:3.0 | 
SDS2:*:4.0:3.0 | SHG2:*:4.0:3.0 | S7501*:*:4.0:3.0)
        OS_REL=''
        test -r /etc/.relid \
-       && OS_REL=.`sed -n 's/[^ ]* [^ ]* \([0-9][0-9]\).*/\1/p' < /etc/.relid`
+       && OS_REL=.$(sed -n 's/[^ ]* [^ ]* \([0-9][0-9]\).*/\1/p' < /etc/.relid)
        /bin/uname -p 2>/dev/null | grep 86 >/dev/null \
          && { echo i486-ncr-sysv4.3"$OS_REL"; exit; }
        /bin/uname -p 2>/dev/null | /bin/grep entium >/dev/null \
@@ -1227,7 +1226,7 @@ EOF
     NCR*:*:4.2:* | MPRAS*:*:4.2:*)
        OS_REL='.3'
        test -r /etc/.relid \
-           && OS_REL=.`sed -n 's/[^ ]* [^ ]* \([0-9][0-9]\).*/\1/p' < 
/etc/.relid`
+           && OS_REL=.$(sed -n 's/[^ ]* [^ ]* \([0-9][0-9]\).*/\1/p' < 
/etc/.relid)
        /bin/uname -p 2>/dev/null | grep 86 >/dev/null \
            && { echo i486-ncr-sysv4.3"$OS_REL"; exit; }
        /bin/uname -p 2>/dev/null | /bin/grep entium >/dev/null \
@@ -1260,7 +1259,7 @@ EOF
        exit ;;
     *:SINIX-*:*:*)
        if uname -p 2>/dev/null >/dev/null ; then
-               UNAME_MACHINE=`(uname -p) 2>/dev/null`
+               UNAME_MACHINE=$( (uname -p) 2>/dev/null)
                echo "$UNAME_MACHINE"-sni-sysv4
        else
                echo ns32k-sni-sysv
@@ -1346,7 +1345,7 @@ EOF
        echo aarch64-apple-darwin"$UNAME_RELEASE"
        exit ;;
     *:Darwin:*:*)
-       UNAME_PROCESSOR=`uname -p`
+       UNAME_PROCESSOR=$(uname -p)
        case $UNAME_PROCESSOR in
            unknown) UNAME_PROCESSOR=powerpc ;;
        esac
@@ -1383,7 +1382,7 @@ EOF
        echo "$UNAME_PROCESSOR"-apple-darwin"$UNAME_RELEASE"
        exit ;;
     *:procnto*:*:* | *:QNX:[0123456789]*:*)
-       UNAME_PROCESSOR=`uname -p`
+       UNAME_PROCESSOR=$(uname -p)
        if test "$UNAME_PROCESSOR" = x86; then
                UNAME_PROCESSOR=i386
                UNAME_MACHINE=pc
@@ -1451,10 +1450,10 @@ EOF
        echo mips-sei-seiux"$UNAME_RELEASE"
        exit ;;
     *:DragonFly:*:*)
-       echo "$UNAME_MACHINE"-unknown-dragonfly"`echo "$UNAME_RELEASE"|sed -e 
's/[-(].*//'`"
+       echo "$UNAME_MACHINE"-unknown-dragonfly"$(echo "$UNAME_RELEASE"|sed -e 
's/[-(].*//')"
        exit ;;
     *:*VMS:*:*)
-       UNAME_MACHINE=`(uname -p) 2>/dev/null`
+       UNAME_MACHINE=$( (uname -p) 2>/dev/null)
        case "$UNAME_MACHINE" in
            A*) echo alpha-dec-vms ; exit ;;
            I*) echo ia64-dec-vms ; exit ;;
@@ -1464,7 +1463,7 @@ EOF
        echo i386-pc-xenix
        exit ;;
     i*86:skyos:*:*)
-       echo "$UNAME_MACHINE"-pc-skyos"`echo "$UNAME_RELEASE" | sed -e 's/ 
.*$//'`"
+       echo "$UNAME_MACHINE"-pc-skyos"$(echo "$UNAME_RELEASE" | sed -e 's/ 
.*$//')"
        exit ;;
     i*86:rdos:*:*)
        echo "$UNAME_MACHINE"-pc-rdos
@@ -1522,7 +1521,7 @@ main ()
 #define __ARCHITECTURE__ "m68k"
 #endif
   int version;
-  version=`(hostinfo | sed -n 's/.*NeXT Mach \([0-9]*\).*/\1/p') 2>/dev/null`;
+  version=$( (hostinfo | sed -n 's/.*NeXT Mach \([0-9]*\).*/\1/p') 
2>/dev/null);
   if (version < 4)
     printf ("%s-next-nextstep%d\n", __ARCHITECTURE__, version);
   else
@@ -1614,7 +1613,7 @@ main ()
 }
 EOF
 
-$CC_FOR_BUILD -o "$dummy" "$dummy.c" 2>/dev/null && SYSTEM_NAME=`$dummy` &&
+$CC_FOR_BUILD -o "$dummy" "$dummy.c" 2>/dev/null && SYSTEM_NAME=$($dummy) &&
        { echo "$SYSTEM_NAME"; exit; }
 
 # Apollos put the system type in the environment.
@@ -1644,9 +1643,9 @@ and
   https://git.savannah.gnu.org/gitweb/?p=config.git;a=blob_plain;f=config.sub
 EOF
 
-year=`echo $timestamp | sed 's,-.*,,'`
+year=$(echo $timestamp | sed 's,-.*,,')
 # shellcheck disable=SC2003
-if test "`expr "\`date +%Y\`" - "$year"`" -lt 3 ; then
+if test "$(expr "$(date +%Y)" - "$year")" -lt 3 ; then
    cat >&2 <<EOF
 
 If $0 has already been updated, send the following data and any
@@ -1655,20 +1654,20 @@ provide the necessary information to handle your system.
 
 config.guess timestamp = $timestamp
 
-uname -m = `(uname -m) 2>/dev/null || echo unknown`
-uname -r = `(uname -r) 2>/dev/null || echo unknown`
-uname -s = `(uname -s) 2>/dev/null || echo unknown`
-uname -v = `(uname -v) 2>/dev/null || echo unknown`
+uname -m = $( (uname -m) 2>/dev/null || echo unknown)
+uname -r = $( (uname -r) 2>/dev/null || echo unknown)
+uname -s = $( (uname -s) 2>/dev/null || echo unknown)
+uname -v = $( (uname -v) 2>/dev/null || echo unknown)
 
-/usr/bin/uname -p = `(/usr/bin/uname -p) 2>/dev/null`
-/bin/uname -X     = `(/bin/uname -X) 2>/dev/null`
+/usr/bin/uname -p = $( (/usr/bin/uname -p) 2>/dev/null)
+/bin/uname -X     = $( (/bin/uname -X) 2>/dev/null)
 
-hostinfo               = `(hostinfo) 2>/dev/null`
-/bin/universe          = `(/bin/universe) 2>/dev/null`
-/usr/bin/arch -k       = `(/usr/bin/arch -k) 2>/dev/null`
-/bin/arch              = `(/bin/arch) 2>/dev/null`
-/usr/bin/oslevel       = `(/usr/bin/oslevel) 2>/dev/null`
-/usr/convex/getsysinfo = `(/usr/convex/getsysinfo) 2>/dev/null`
+hostinfo               = $( (hostinfo) 2>/dev/null)
+/bin/universe          = $( (/bin/universe) 2>/dev/null)
+/usr/bin/arch -k       = $( (/usr/bin/arch -k) 2>/dev/null)
+/bin/arch              = $( (/bin/arch) 2>/dev/null)
+/usr/bin/oslevel       = $( (/usr/bin/oslevel) 2>/dev/null)
+/usr/convex/getsysinfo = $( (/usr/convex/getsysinfo) 2>/dev/null)
 
 UNAME_MACHINE = "$UNAME_MACHINE"
 UNAME_RELEASE = "$UNAME_RELEASE"
diff --git a/lib/config.sub b/lib/config.sub
index 0753e30..c874b7a 100755
--- a/lib/config.sub
+++ b/lib/config.sub
@@ -2,7 +2,7 @@
 # Configuration validation subroutine script.
 #   Copyright 1992-2020 Free Software Foundation, Inc.
 
-timestamp='2020-08-17'
+timestamp='2020-11-07'
 
 # This file is free software; you can redistribute it and/or modify it
 # under the terms of the GNU General Public License as published by
@@ -50,7 +50,7 @@ timestamp='2020-08-17'
 #      CPU_TYPE-MANUFACTURER-KERNEL-OPERATING_SYSTEM
 # It is wrong to echo any other type of specification.
 
-me=`echo "$0" | sed -e 's,.*/,,'`
+me=$(echo "$0" | sed -e 's,.*/,,')
 
 usage="\
 Usage: $0 [OPTION] CPU-MFR-OPSYS or ALIAS
@@ -769,22 +769,22 @@ case $basic_machine in
                vendor=hp
                ;;
        i*86v32)
-               cpu=`echo "$1" | sed -e 's/86.*/86/'`
+               cpu=$(echo "$1" | sed -e 's/86.*/86/')
                vendor=pc
                basic_os=sysv32
                ;;
        i*86v4*)
-               cpu=`echo "$1" | sed -e 's/86.*/86/'`
+               cpu=$(echo "$1" | sed -e 's/86.*/86/')
                vendor=pc
                basic_os=sysv4
                ;;
        i*86v)
-               cpu=`echo "$1" | sed -e 's/86.*/86/'`
+               cpu=$(echo "$1" | sed -e 's/86.*/86/')
                vendor=pc
                basic_os=sysv
                ;;
        i*86sol2)
-               cpu=`echo "$1" | sed -e 's/86.*/86/'`
+               cpu=$(echo "$1" | sed -e 's/86.*/86/')
                vendor=pc
                basic_os=solaris2
                ;;
@@ -917,7 +917,7 @@ case $basic_machine in
                ;;
        leon-*|leon[3-9]-*)
                cpu=sparc
-               vendor=`echo "$basic_machine" | sed 's/-.*//'`
+               vendor=$(echo "$basic_machine" | sed 's/-.*//')
                ;;
 
        *-*)
@@ -1084,7 +1084,7 @@ case $cpu-$vendor in
                cpu=mipsisa64sb1el
                ;;
        sh5e[lb]-*)
-               cpu=`echo "$cpu" | sed 's/^\(sh.\)e\(.\)$/\1\2e/'`
+               cpu=$(echo "$cpu" | sed 's/^\(sh.\)e\(.\)$/\1\2e/')
                ;;
        spur-*)
                cpu=spur
@@ -1102,7 +1102,7 @@ case $cpu-$vendor in
                cpu=x86_64
                ;;
        xscale-* | xscalee[bl]-*)
-               cpu=`echo "$cpu" | sed 's/^xscale/arm/'`
+               cpu=$(echo "$cpu" | sed 's/^xscale/arm/')
                ;;
        arm64-*)
                cpu=aarch64
@@ -1286,11 +1286,15 @@ then
 case $basic_os in
        gnu/linux*)
                kernel=linux
-               os=`echo $basic_os | sed -e 's|gnu/linux|gnu|'`
+               os=$(echo $basic_os | sed -e 's|gnu/linux|gnu|')
+               ;;
+       os2-emx)
+               kernel=os2
+               os=$(echo $basic_os | sed -e 's|os2-emx|emx|')
                ;;
        nto-qnx*)
                kernel=nto
-               os=`echo $basic_os | sed -e 's|nto-qnx|qnx|'`
+               os=$(echo $basic_os | sed -e 's|nto-qnx|qnx|')
                ;;
        *-*)
                # shellcheck disable=SC2162
@@ -1301,11 +1305,11 @@ EOF
        # Default OS when just kernel was specified
        nto*)
                kernel=nto
-               os=`echo $basic_os | sed -e 's|nto|qnx|'`
+               os=$(echo $basic_os | sed -e 's|nto|qnx|')
                ;;
        linux*)
                kernel=linux
-               os=`echo $basic_os | sed -e 's|linux|gnu|'`
+               os=$(echo $basic_os | sed -e 's|linux|gnu|')
                ;;
        *)
                kernel=
@@ -1326,7 +1330,7 @@ case $os in
                os=cnk
                ;;
        solaris1 | solaris1.*)
-               os=`echo $os | sed -e 's|solaris1|sunos4|'`
+               os=$(echo $os | sed -e 's|solaris1|sunos4|')
                ;;
        solaris)
                os=solaris2
@@ -1355,7 +1359,7 @@ case $os in
                os=sco3.2v4
                ;;
        sco3.2.[4-9]*)
-               os=`echo $os | sed -e 's/sco3.2./sco3.2v/'`
+               os=$(echo $os | sed -e 's/sco3.2./sco3.2v/')
                ;;
        sco*v* | scout)
                # Don't match below
@@ -1367,13 +1371,7 @@ case $os in
                os=psos
                ;;
        qnx*)
-               case $cpu in
-                   x86 | i*86)
-                       ;;
-                   *)
-                       os=nto-$os
-                       ;;
-               esac
+               os=qnx
                ;;
        hiux*)
                os=hiuxwe2
@@ -1391,7 +1389,7 @@ case $os in
                os=lynxos
                ;;
        mac[0-9]*)
-               os=`echo "$os" | sed -e 's|mac|macos|'`
+               os=$(echo "$os" | sed -e 's|mac|macos|')
                ;;
        opened*)
                os=openedition
@@ -1400,10 +1398,10 @@ case $os in
                os=os400
                ;;
        sunos5*)
-               os=`echo "$os" | sed -e 's|sunos5|solaris2|'`
+               os=$(echo "$os" | sed -e 's|sunos5|solaris2|')
                ;;
        sunos6*)
-               os=`echo "$os" | sed -e 's|sunos6|solaris3|'`
+               os=$(echo "$os" | sed -e 's|sunos6|solaris3|')
                ;;
        wince*)
                os=wince
@@ -1437,7 +1435,7 @@ case $os in
                ;;
        # Preserve the version number of sinix5.
        sinix5.*)
-               os=`echo $os | sed -e 's|sinix|sysv|'`
+               os=$(echo $os | sed -e 's|sinix|sysv|')
                ;;
        sinix*)
                os=sysv4
@@ -1722,7 +1720,7 @@ case $os in
             | skyos* | haiku* | rdos* | toppers* | drops* | es* \
             | onefs* | tirtos* | phoenix* | fuchsia* | redox* | bme* \
             | midnightbsd* | amdhsa* | unleashed* | emscripten* | wasi* \
-            | nsk* | powerunix* | genode* | zvmoe* )
+            | nsk* | powerunix* | genode* | zvmoe* | qnx* | emx*)
                ;;
        # This one is extra strict with allowed versions
        sco3.2v2 | sco3.2v[4-9]* | sco5v6*)
@@ -1741,6 +1739,8 @@ esac
 case $kernel-$os in
        linux-gnu* | linux-dietlibc* | linux-android* | linux-newlib* | 
linux-musl* | linux-uclibc* )
                ;;
+       uclinux-uclibc* )
+               ;;
        -dietlibc* | -newlib* | -musl* | -uclibc* )
                # These are just libc implementations, not actual OSes, and thus
                # require a kernel.
@@ -1751,6 +1751,8 @@ case $kernel-$os in
                ;;
        nto-qnx*)
                ;;
+       os2-emx)
+               ;;
        *-eabi* | *-gnueabi*)
                ;;
        -*)
diff --git a/lib/texinfo.tex b/lib/texinfo.tex
index 0d2a1fd..3c7051d 100644
--- a/lib/texinfo.tex
+++ b/lib/texinfo.tex
@@ -3,7 +3,7 @@
 % Load plain if necessary, i.e., if running under initex.
 \expandafter\ifx\csname fmtname\endcsname\relax\input plain\fi
 %
-\def\texinfoversion{2020-06-25.17}
+\def\texinfoversion{2020-10-24.12}
 %
 % Copyright 1985, 1986, 1988, 1990-2020 Free Software Foundation, Inc.
 %
@@ -3038,10 +3038,18 @@ end
 % arg (if given), and not the url (which is then just the link target).
 \newif\ifurefurlonlylink
 
+% The default \pretolerance setting stops the penalty inserted in
+% \urefallowbreak being a discouragement to line breaking.  Set it to
+% a negative value for this paragraph only.  Hopefully this does not
+% conflict with redefinitions of \par done elsewhere.
+\def\nopretolerance{%
+\pretolerance=-1
+\def\par{\endgraf\pretolerance=100 \let\par\endgraf}%
+}
+
 % The main macro is \urefbreak, which allows breaking at expected
-% places within the url.  (There used to be another version, which
-% didn't support automatic breaking.)
-\def\urefbreak{\begingroup \urefcatcodes \dourefbreak}
+% places within the url.
+\def\urefbreak{\nopretolerance \begingroup \urefcatcodes \dourefbreak}
 \let\uref=\urefbreak
 %
 \def\dourefbreak#1{\urefbreakfinish #1,,,\finish}
@@ -3152,14 +3160,14 @@ end
 
 % Allow a ragged right output to aid breaking long URL's.  There can
 % be a break at the \allowbreak with no extra glue (if the existing stretch in
-% the line is sufficient), a break at the \penalty100 with extra glue added
+% the line is sufficient), a break at the \penalty with extra glue added
 % at the end of the line, or no break at all here.
 %   Changing the value of the penalty and/or the amount of stretch affects how
 % preferable one choice is over the other.
 \def\urefallowbreak{%
-  \allowbreak
+  \penalty0\relax
   \hskip 0pt plus 2 em\relax
-  \penalty300
+  \penalty1000\relax
   \hskip 0pt plus -2 em\relax
 }
 
@@ -3356,6 +3364,25 @@ end
 \def\sup{\ifmmode \expandafter\ptexsp \else \expandafter\finishsup\fi}
 \def\finishsup#1{$\ptexsp{\hbox{\switchtolllsize #1}}$}%
 
+% provide this command from LaTeX as it is very common
+\def\frac#1#2{{{#1}\over{#2}}}
+
+% @displaymath.
+% \globaldefs is needed to recognize the end lines in \tex and
+% \end tex.  Set \thisenv as @end displaymath is seen before @end tex.
+{\obeylines
+\globaldefs=1
+\envdef\displaymath{%
+\tex
+\def\thisenv{\displaymath}%
+$$%
+}
+
+\def\Edisplaymath{$$
+\def\thisenv{\tex}%
+\end tex
+}}
+
 % @inlinefmt{FMTNAME,PROCESSED-TEXT} and @inlineraw{FMTNAME,RAW-TEXT}.
 % Ignore unless FMTNAME == tex; then it is like @iftex and @tex,
 % except specified as a normal braced arg, so no newlines to worry about.
@@ -7639,7 +7666,7 @@ might help (with 'rm \jobname.?? \jobname.??s')%
 \endgroup
 %
 \envdef\verbatim{%
-    \setupverbatim\doverbatim
+    \setnormaldispenv\setupverbatim\doverbatim
 }
 \let\Everbatim = \afterenvbreak
 
@@ -11459,6 +11486,18 @@ directory should work if nowhere else does.}
   \globaldefs = 0
 }}
 
+\def\bsixpaper{{\globaldefs = 1
+  \afourpaper
+  \internalpagesizes{140mm}{100mm}%
+                    {-6.35mm}{-12.7mm}%
+                    {\bindingoffset}{14pt}%
+                    {176mm}{125mm}%
+  \let\SETdispenvsize=\smallword
+  \lispnarrowing = 0.2in
+  \globaldefs = 0
+}}
+
+
 % @pagesizes TEXTHEIGHT[,TEXTWIDTH]
 % Perhaps we should allow setting the margins, \topskip, \parskip,
 % and/or leading, also. Or perhaps we should compute them somehow.
@@ -11472,12 +11511,12 @@ directory should work if nowhere else does.}
   \setleading{\textleading}%
   %
   \dimen0 = #1\relax
-  \advance\dimen0 by \voffset
-  \advance\dimen0 by 1in % reference point for DVI is 1 inch from top of page
+  \advance\dimen0 by 2.5in % default 1in margin above heading line
+                           % and 1.5in to include heading, footing and
+                           % bottom margin
   %
   \dimen2 = \hsize
-  \advance\dimen2 by \normaloffset
-  \advance\dimen2 by 1in % reference point is 1 inch from left edge of page
+  \advance\dimen2 by 2in % default to 1 inch margin on each side
   %
   \internalpagesizes{#1}{\hsize}%
                     {\voffset}{\normaloffset}%



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