commit 60bc809d9a80ec12530d224cc680bae42c4de285
author Marc-André Lemburg <mal@egenix.com> Wed Jun 14 09:18:32 2000 +0000
committer Marc-André Lemburg <mal@egenix.com> Wed Jun 14 09:18:32 2000 +0000
tree d3d97df20640c41fe39fa465397a3836026c3765
parent bddf502a1f07d902f0d80aa268d3f1e838474c31

Marc-Andre Lemburg <mal@lemburg.com>:
Added code so that .isXXX() testing returns 0 for emtpy strings.

Objects/stringobject.c

diff --git a/Objects/stringobject.c b/Objects/stringobject.c
index 5d754b0..a254019 100644
--- a/Objects/stringobject.c
+++ b/Objects/stringobject.c
@@ -1927,6 +1927,10 @@
 	isspace(*p))
 	return PyInt_FromLong(1);
 
+    /* Special case for empty strings */
+    if (PyString_GET_SIZE(self) == 0)
+	return PyInt_FromLong(0);
+
     e = p + PyString_GET_SIZE(self);
     for (; p < e; p++) {
 	if (!isspace(*p))
@@ -1956,6 +1960,10 @@
 	isdigit(*p))
 	return PyInt_FromLong(1);
 
+    /* Special case for empty strings */
+    if (PyString_GET_SIZE(self) == 0)
+	return PyInt_FromLong(0);
+
     e = p + PyString_GET_SIZE(self);
     for (; p < e; p++) {
 	if (!isdigit(*p))
@@ -1985,6 +1993,10 @@
     if (PyString_GET_SIZE(self) == 1)
 	return PyInt_FromLong(islower(*p) != 0);
 
+    /* Special case for empty strings */
+    if (PyString_GET_SIZE(self) == 0)
+	return PyInt_FromLong(0);
+
     e = p + PyString_GET_SIZE(self);
     cased = 0;
     for (; p < e; p++) {
@@ -2017,6 +2029,10 @@
     if (PyString_GET_SIZE(self) == 1)
 	return PyInt_FromLong(isupper(*p) != 0);
 
+    /* Special case for empty strings */
+    if (PyString_GET_SIZE(self) == 0)
+	return PyInt_FromLong(0);
+
     e = p + PyString_GET_SIZE(self);
     cased = 0;
     for (; p < e; p++) {
@@ -2050,6 +2066,10 @@
     if (PyString_GET_SIZE(self) == 1)
 	return PyInt_FromLong(isupper(*p) != 0);
 
+    /* Special case for empty strings */
+    if (PyString_GET_SIZE(self) == 0)
+	return PyInt_FromLong(0);
+
     e = p + PyString_GET_SIZE(self);
     cased = 0;
     previous_is_cased = 0;