Commit id '94d2d642' caused a syntax-error check to fail:

docs/Makefile.am:276:	$(AM_V_GEN)sed -e '/<span id="php_placeholder"><\/span>/r '"$(srcdir)/$@.code.in" \
maint.mk: Wrap long lines in Makefiles
cfg.mk:721: recipe for target 'sc_prohibit_long_lines' failed
make: *** [sc_prohibit_long_lines] Error 1
make: *** Waiting for unfinished jobs....

Altered the line to put another line wrap between sed and -e