$ git range-diff master..gh/stl shadow/master..stl 
1:  851d24b5 = 1:  2740e5ff lib/string/ctype/strtoascii/: strtolower(): Add API
2:  6436ac02 = 2:  a6e78233 lib/: Use strtolower() instead of its pattern

$ git rd
1:  2740e5ff = 1:  7db4fb87 lib/string/ctype/strtoascii/: strtolower(): Add API
2:  a6e78233 = 2:  9c7bc74e lib/: Use strtolower() instead of its pattern

$ git rd 
1:  7db4fb87 = 1:  6fda0b3b lib/string/ctype/strtoascii/: strtolower(): Add API
2:  9c7bc74e ! 2:  b6e7a38f lib/: Use strtolower() instead of its pattern
    @@ Commit message
     
         Signed-off-by: Alejandro Colomar <alx@kernel.org>
     
    - ## lib/getdate.y ##
    -@@
    - 
    - #include "attr.h"
    - #include "getdate.h"
    -+#include "string/ctype/strtoascii/strtolower.h"
    - #include "string/strcmp/streq.h"
    - #include "string/strspn/stpspn.h"
    - 
    -@@ lib/getdate.y: static int LookupWord (char *buff)
    -   int i;
    -   bool abbrev;
    - 
    --  /* Make it lowercase. */
    --  for (p = buff; !streq(p, ""); p++)
    --    if (isupper (*p))
    --      *p = tolower (*p);
    -+  strtolower(buff);
    - 
    -   if (streq(buff, "am") || streq(buff, "a.m."))
    -     {
    -
      ## lib/obscure.c ##
     @@
     -/*

$ git rd
1:  6fda0b3b = 1:  edba59c8 lib/string/ctype/strtoascii/: strtolower(): Add API
2:  b6e7a38f = 2:  7ead7cdb lib/: Use strtolower() instead of its pattern

$ git rd
1:  edba59c8 = 1:  ac0b8d74 lib/string/ctype/strtoascii/: strtolower(): Add API
2:  7ead7cdb = 2:  02e604d6 lib/: Use strtolower() instead of its pattern