+ delete $part->{bdy};
+ if ($cte =~ /\bquoted-printable\b/i && $part->crlf eq "\n") {
+ $s =~ s/\r\n/\n/sg;
+ }
+ $s =~ m!( # $1 start header lines we save for debugging:
+
+ # everything before ^index is optional, but we don't
+ # want to match ^(old|copy|rename|deleted|...) unless
+ # we match /^diff --git/ first:
+ (?: # begin optional stuff:
+
+ # try to get the pre-and-post filenames as $2 and $3
+ (?:^diff\x20--git\x20$FN\x20$FN$LF)
+
+ (?:^(?: # pass all this to git-apply:
+ # old mode $4
+ (?:old\x20mode\x20($MODE))
+ |
+ # new mode (possibly new file) ($5)
+ (?:new\x20(?:file\x20)?mode\x20($MODE))
+ |
+ (?:(?:copy|rename|deleted|
+ dissimilarity|similarity)$ANY)
+ )$LF)*
+
+ )? # end of optional stuff, everything below is required
+
+ # match the pre and post-image OIDs as $6 $7
+ ^index\x20(${pre}[a-f0-9]*)\.\.(${post}[a-f0-9]*)
+ # mode if unchanged $8
+ (?:\x20(100644|120000|100755))?$LF
+ ) # end of header lines ($1)
+ ( # $9 is the patch body
+ # "--- a/foo.c" sets pre-filename ($10) in case
+ # $2 is missing
+ (?:^---\x20$FN$LF)
+
+ # "+++ b/foo.c" sets post-filename ($11) in case
+ # $3 is missing
+ (?:^\+{3}\x20$FN$LF)
+
+ # the meat of the diff, including "^\\No newline ..."
+ # We also allow for totally blank lines w/o leading spaces,
+ # because git-apply(1) handles that case, too
+ (?:^(?:[\@\+\x20\-\\][^\n]*|)$LF)+
+ )!smx or return;
+ undef $s; # free memory
+
+ my $di = {
+ hdr_lines => $1,
+ oid_a => $6,
+ oid_b => $7,
+ mode_a => $5 // $8 // $4, # new (file) // unchanged // old
+ };
+ my $path_a = $2 // $10;
+ my $path_b = $3 // $11;
+ my $patch = $9;