Use configure detected or user specified sed in build system

Sometimes system default sed is not the best option.
With this modification user may easily override sed used by build system
without editing any file.

Signed-off-by: Karlson2k (Evgeny Grin) <k2k@narod.ru>
Signed-off-by: Andrew Borodin <aborodin@vmail.ru>

autogen.sh

@@ -13,7 +13,7 @@ rm -f INSTALL && ln -s doc/INSTALL
 
 # Generate po/POTFILES.in
 ${XGETTEXT:-xgettext} --keyword=_ --keyword=N_ --keyword=Q_ --output=- \
-	`find . -name '*.[ch]'` | sed -ne '/^#:/{s/#://;s/:[0-9]*/\
+	`find . -name '*.[ch]'` | ${SED-sed} -ne '/^#:/{s/#://;s/:[0-9]*/\
 /g;s/ //g;p;}' | \
 	grep -v '^$' | sort | uniq >po/POTFILES.in
 

configure.ac

@@ -710,7 +710,7 @@ po/Makefile.in
 
 dnl https://stackoverflow.com/questions/30897170/ac-subst-does-not-expand-variable/30932102#30932102
 AC_CONFIG_FILES(
-[misc/syntax/Syntax], [sed -i -e "s%\${prefix}%$PREFIX%" misc/syntax/Syntax], [export PREFIX=$prefix]
+[misc/syntax/Syntax], [${SED-sed} -i -e "s%\${prefix}%$PREFIX%" misc/syntax/Syntax], [export PREFIX=$prefix]
 )
 
 AC_CONFIG_FILES([

contrib/Makefile.am

@@ -19,14 +19,14 @@ EXTRA_DIST = \
 	$(noinst_DATA)
 
 mc.csh: $(top_builddir)/config.status $(srcdir)/mc.csh.in
-	sed "s%@""pkglibexecdir@%$(pkglibexecdir)%" $(srcdir)/mc.csh.in > mc.csh
+	$(SED) "s%@""pkglibexecdir@%$(pkglibexecdir)%" $(srcdir)/mc.csh.in > mc.csh
 
 mc.sh: $(top_builddir)/config.status $(srcdir)/mc.sh.in
-	sed "s%@""pkglibexecdir@%$(pkglibexecdir)%" $(srcdir)/mc.sh.in > mc.sh
+	$(SED) "s%@""pkglibexecdir@%$(pkglibexecdir)%" $(srcdir)/mc.sh.in > mc.sh
 
 mc-wrapper.csh: $(top_builddir)/config.status $(srcdir)/mc-wrapper.csh.in
-	sed "s%@""bindir@%$(bindir)%" $(srcdir)/mc-wrapper.csh.in > mc-wrapper.csh
+	$(SED) "s%@""bindir@%$(bindir)%" $(srcdir)/mc-wrapper.csh.in > mc-wrapper.csh
 
 mc-wrapper.sh: $(top_builddir)/config.status $(srcdir)/mc-wrapper.sh.in
-	sed "s%@""bindir@%$(bindir)%" $(srcdir)/mc-wrapper.sh.in > mc-wrapper.sh
+	$(SED) "s%@""bindir@%$(bindir)%" $(srcdir)/mc-wrapper.sh.in > mc-wrapper.sh
 

doc/man/date-of-man-include.am

@@ -13,12 +13,12 @@ MAN_DATE_CMD = \
 
 mc.1: $(srcdir)/mc.1.in
 	MAN_FILE=$<; MAN_DATE=$$($(MAN_DATE_CMD)); \
-	sed $(SED_PARAMETERS) $< > $@
+	$(SED) $(SED_PARAMETERS) $< > $@
 
 mcedit.1: $(srcdir)/mcedit.1.in
 	MAN_FILE=$<; MAN_DATE=$$($(MAN_DATE_CMD)); \
-	sed $(SED_PARAMETERS) $< > $@
+	$(SED) $(SED_PARAMETERS) $< > $@
 
 mcview.1: $(srcdir)/mcview.1.in
 	MAN_FILE=$<; MAN_DATE=$$($(MAN_DATE_CMD)); \
-	sed $(SED_PARAMETERS) $< > $@
+	$(SED) $(SED_PARAMETERS) $< > $@

m4.include/mc-glib.m4

@@ -49,7 +49,7 @@ AC_DEFUN([mc_G_MODULE_SUPPORTED], [
             esac
 
             if test -n "$lib"; then
-                lib1=`echo $i | sed 's/^-l//'`
+                lib1=`echo $i | ${SED-sed} 's/^-l//'`
                 if test -f "$GLIB_LIBDIR/lib${lib1}.a"; then
                     add="$GLIB_LIBDIR/lib${lib1}.a"
                 else

m4.include/mc-version.m4

@@ -10,7 +10,7 @@ dnl @modified Andrew Borodin <aborodin@vmail.ru>
 
 AC_DEFUN([mc_VERSION],[
     if test -f ${srcdir}/mc-version.h; then
-        VERSION=$(grep '^#define MC_CURRENT_VERSION' ${srcdir}/mc-version.h | sed 's/.*"\(.*\)"$/\1/')
+        VERSION=$(grep '^#define MC_CURRENT_VERSION' ${srcdir}/mc-version.h | ${SED-sed} 's/.*"\(.*\)"$/\1/')
     else
         VERSION="unknown"
     fi

maint/utils/find-dup-includes/runme.sh

@@ -37,7 +37,7 @@ findIncludeDupsInDir() {
     dir_name=$1; shift
 
     for i in $(find "${dir_name}" -name '*.[ch]'); do
-        file_name=$(echo $i | sed 's@'"${MC_SOURCE_ROOT_DIR}/"'@@g')
+        file_name=$(echo $i | ${SED-sed} 's@'"${MC_SOURCE_ROOT_DIR}/"'@@g')
         [ $(grep "^\s*${file_name}$" -c "${MC_SOURCE_ROOT_DIR}/maint/utils/find-dup-includes/exclude-list.cfg") -ne 0 ] && continue
         "${MC_SOURCE_ROOT_DIR}/maint/utils/find-dup-includes/find-in-one-file.pl" "${i}"
     done

maint/utils/update-years.sh

@@ -9,7 +9,7 @@ LINE="Copyright (C)"
 for i in "$SOURCES"; do
     # replace year: XXXX-YYYY -> XXXX-ZZZZ
     # add year: XXXX -> XXXX-ZZZZ
-    sed -i -e "
+    ${SED-sed} -i -e "
         1,20 {
                 /$LINE/s/-[0-9]\{4\}$/-$YEAR/
         };
@@ -19,4 +19,4 @@ for i in "$SOURCES"; do
 done
 
 # special case
-sed -i -e "/$LINE/s/-[0-9]\{4\} the/-$YEAR the/" src/editor/editwidget.c
+${SED-sed} -i -e "/$LINE/s/-[0-9]\{4\} the/-$YEAR the/" src/editor/editwidget.c

po/Rules-pot-defaults

@@ -1,7 +1,7 @@
 
 update-po: Makefile
 	$(MAKE) $(DOMAIN).pot-update && \
-	sed \
+	$(SED) \
 	    -e '/#, fuzzy/d' \
 	    -e 's/Project-Id-Version: PACKAGE VERSION/Project-Id-Version: $(PACKAGE) $(VERSION)/' \
 	    -e 's/^"Plural-Forms: nplurals=INTEGER;/# "Plural-Forms: nplurals=INTEGER;/' \

version.sh

@@ -63,7 +63,7 @@ SHOR_MC_VERSION="${PREV_MC_VERSION}"
 
 if [ -r "${VERSION_FILE}" ]
   then
-    PREV_MC_VERSION=`sed -n 's/^#define MC_CURRENT_VERSION "\(.*\)"$/\1/p' "${VERSION_FILE}"`
+    PREV_MC_VERSION=`${SED-sed} -n 's/^#define MC_CURRENT_VERSION "\(.*\)"$/\1/p' "${VERSION_FILE}"`
     CURR_MC_VERSION="${PREV_MC_VERSION}"
     SHOR_MC_VERSION="${PREV_MC_VERSION}"
 fi