#if defined SNAPSHOT
-char ver[] = "Development snapshot " STR(SNAPSHOT);
-char sshver[] = "PuTTY-Snapshot-" STR(SNAPSHOT);
+#if defined SVN_REV
+#define SNAPSHOT_TEXT STR(SNAPSHOT) ":r" STR(SVN_REV)
+#else
+#define SNAPSHOT_TEXT STR(SNAPSHOT)
+#endif
+
+char ver[] = "Development snapshot " SNAPSHOT_TEXT;
+char sshver[] = "PuTTY-Snapshot-" SNAPSHOT_TEXT;
+
+#undef SNAPSHOT_TEXT
#elif defined RELEASE
char ver[] = "Release " STR(RELEASE);
char sshver[] = "PuTTY-Release-" STR(RELEASE);
+#elif defined SVN_REV
+
+char ver[] = "Custom build r" STR(SVN_REV);
+char sshver[] = "PuTTY-Custom-r" STR(SVN_REV);
+
#else
char ver[] = "Unidentified build, " __DATE__ " " __TIME__;