Leave the first line in, we're cleaning it in Perl now

diff-so-fancy

@@ -38,8 +38,7 @@ git_index_line_pattern="^($color_code_regex)index .*"
 
 format_diff_header () {
   # simplify the unified patch diff header
-  $SED -E "s/^($color_code_regex)diff --git .*$//g" \
-    | $SED -E "/$git_index_line_pattern/{N;s/$git_index_line_pattern\n//;}" \
+    $SED -E "/$git_index_line_pattern/{N;s/$git_index_line_pattern\n//;}" \
     | $SED -E "s/^($color_code_regex)\-\-\-(.*)$/\1$(print_horizontal_rule)\\${NL}\1\-\-\-\-\5/g" \
     | $SED -E "s/^($color_code_regex)\+\+\+(.*)$/\1\+\+\+\+\5\\${NL}\1$(print_horizontal_rule)/g"
 }
@@ -53,10 +52,6 @@ mark_empty_lines () {
   $SED -E "s/^$color_code_regex[\+\-]$reset_color\s*$/$invert_color\1 $reset_escape/g"
 }
 
-remove_first_empty_line () {
-  $SED -E '1 D'
-}
-
 strip_leading_symbols () {
   # strip the + and -
   $SED -E "s/^($color_code_regex)[\+\-]/\1 /g"
@@ -81,7 +76,6 @@ cat $input \
   | format_diff_header \
   | colorize_context_line \
   | mark_empty_lines \
-  | remove_first_empty_line \
   | strip_leading_symbols \
   | strip_first_column \
   | print_header_clean