Issue #20326: Argument Clinic now uses a simple, unique signature to
annotate text signatures in docstrings, resulting in fewer false
positives.  "self" parameters are also explicitly marked, allowing
inspect.Signature() to authoritatively detect (and skip) said parameters.

Issue #20326: Argument Clinic now generates separate checksums for the
input and output sections of the block, allowing external tools to verify
that the input has not changed (and thus the output is not out-of-date).
diff --git a/Modules/unicodedata.c b/Modules/unicodedata.c
index ca1620f..c6c4ba2 100644
--- a/Modules/unicodedata.c
+++ b/Modules/unicodedata.c
@@ -21,7 +21,7 @@
 module unicodedata
 class unicodedata.UCD 'PreviousDBVersion *' '&UCD_Type'
 [clinic start generated code]*/
-/*[clinic end generated code: checksum=da39a3ee5e6b4b0d3255bfef95601890afd80709]*/
+/*[clinic end generated code: output=da39a3ee5e6b4b0d input=6dac153082d150bc]*/
 
 /* character properties */
 
@@ -129,7 +129,7 @@
 [clinic start generated code]*/
 
 PyDoc_STRVAR(unicodedata_UCD_decimal__doc__,
-"decimal(self, unichr, default=None)\n"
+"sig=($self, unichr, default=None)\n"
 "Converts a Unicode character into its equivalent decimal value.\n"
 "\n"
 "Returns the decimal value assigned to the Unicode character unichr\n"
@@ -161,7 +161,7 @@
 
 static PyObject *
 unicodedata_UCD_decimal_impl(PreviousDBVersion *self, PyUnicodeObject *unichr, PyObject *default_value)
-/*[clinic end generated code: checksum=e1371a1a016e19fdd3cd2c1af1d1832df095f50b]*/
+/*[clinic end generated code: output=a3ad5de9393acb2f input=c25c9d2b4de076b1]*/
 {
     int have_old = 0;
     long rc;