--- util/texi2dvi
+++ util/texi2dvi	2011-09-02 10:25:04.616426245 +0000
@@ -78,7 +78,7 @@ newline='
 IFS="$space$tab$newline"
 
 # In case someone pedantic insists on using grep -E.
-: ${EGREP=egrep}
+: ${EGREP=grep -E}
 
 # Systems which define $COMSPEC or $ComSpec use semicolons to separate
 # directories in TEXINPUTS -- except for Cygwin et al., where COMSPEC
@@ -1683,7 +1683,7 @@ input_file_name_decode ()
 
   # If the COMMAND_LINE_FILENAME is not absolute (e.g., --debug.tex),
   # prepend `./' in order to avoid that the tools take it as an option.
-  echo "$command_line_filename" | $EGREP '^(/|[A-z]:/)' >&6 \
+  echo "$command_line_filename" | $EGREP '^(/|[A-Za-z]:/)' >&6 \
   || command_line_filename="./$command_line_filename"
 
   # See if the file exists.  If it doesn't we're in trouble since, even