Backport handling of * segments from main.

Lib/pathlib.py

@@ -127,12 +127,19 @@ def _compile_pattern_lines(pattern_lines, case_sensitive):
     # Match the start of the path, or just after a path separator
     parts = ['^']
     for part in pattern_lines.splitlines(keepends=True):
-        # We slice off the common prefix and suffix added by translate() to
-        # ensure that re.DOTALL is not set, and the end of the string not
-        # matched, respectively. With DOTALL not set, '*' wildcards will not
-        # match path separators, because the '.' characters in the pattern
-        # will not match newlines.
-        parts.append(fnmatch.translate(part)[_FNMATCH_SLICE])
+        if part == '*\n':
+            part = r'.+\n'
+        elif part == '*':
+            part = r'.+'
+        else:
+            # Any other component: pass to fnmatch.translate(). We slice off
+            # the common prefix and suffix added by translate() to ensure that
+            # re.DOTALL is not set, and the end of the string not matched,
+            # respectively. With DOTALL not set, '*' wildcards will not match
+            # path separators, because the '.' characters in the pattern will
+            # not match newlines.
+            part = fnmatch.translate(part)[_FNMATCH_SLICE]
+        parts.append(part)
     # Match the end of the path, always.
     parts.append(r'\Z')
     flags = re.MULTILINE