1https://git.savannah.gnu.org/cgit/diffutils.git/patch/?id=ba08fbbb0ca5da455bf695236c57bc50e7faed50
2https://github.com/NixOS/nixpkgs/pull/213421#issuecomment-1407749912
3
4Fix 'diff -D' regression
5--- a/src/diff.c
6+++ b/src/diff.c
7@@ -416,7 +416,7 @@ main (int argc, char **argv)
8 char *base = b;
9 int changes = 0;
10
11- for (i = 0; i < sizeof sizeof C_ifdef_group_formats; i++)
12+ for (i = 0; i < sizeof C_ifdef_group_formats; i++)
13 {
14 char ch = C_ifdef_group_formats[i];
15 switch (ch)