Roman Bolshakov wrote:
> if test -n "$$files"; then
> \
> if test -n "$$prohibit"; then \
> - grep $$with_grep_options $(_ignore_case) -nE "$$prohibit" $$files \
> + echo "$$files" | xargs -n $(VC_ARG_MAX)
> \
> + grep $$with_grep_options $(_ignore_case) -nE "$$prohibit" \
> | grep -vE "$${exclude:-^$$}"
> \
> && { msg="$$halt" $(_sc_say_and_exit) } || :;
> \
It is incorrect to transform
grep OPTIONS FILES
to
echo FILES | xargs -n N grep OPTIONS
because when the last chunk of FILES consists of just 1 file, 'grep'
produces different output. Instead, you need to transform it to
echo FILES | xargs -n N grep OPTIONS /dev/null
See:
$ cd gnulib/modules
$ grep xalloc *-tests
acl-tests:xalloc
copy-file-tests:xalloc
c-xvasprintf-tests:xalloc
obstack-printf-tests:xalloc
regex-quote-tests:xalloc
userspec-tests:xalloc
xalloc-die-tests:tests/test-xalloc-die.c
xalloc-die-tests:tests/test-xalloc-die.sh
xalloc-die-tests:TESTS += test-xalloc-die.sh
xalloc-die-tests:check_PROGRAMS += test-xalloc-die
xalloc-die-tests:test_xalloc_die_LDADD = $(LDADD) @LIBINTL@
$ echo *-tests | xargs -n 1 grep xalloc
xalloc
xalloc
xalloc
xalloc
xalloc
xalloc
tests/test-xalloc-die.c
tests/test-xalloc-die.sh
TESTS += test-xalloc-die.sh
check_PROGRAMS += test-xalloc-die
test_xalloc_die_LDADD = $(LDADD) @LIBINTL@
$ echo *-tests | xargs -n 1 grep xalloc /dev/null
acl-tests:xalloc
copy-file-tests:xalloc
c-xvasprintf-tests:xalloc
obstack-printf-tests:xalloc
regex-quote-tests:xalloc
userspec-tests:xalloc
xalloc-die-tests:tests/test-xalloc-die.c
xalloc-die-tests:tests/test-xalloc-die.sh
xalloc-die-tests:TESTS += test-xalloc-die.sh
xalloc-die-tests:check_PROGRAMS += test-xalloc-die
xalloc-die-tests:test_xalloc_die_LDADD = $(LDADD) @LIBINTL@
Bruno
