update _CustomTextWrap to make it compatible with Python 3.14

add `and space_left > 0` to prevent appending an empty string to `cur_line` when the line is already full.

Author: astanin

tabulate/__init__.py

@@ -2769,7 +2769,7 @@ def _handle_long_word(self, reversed_chunks, cur_line, cur_len, width):
 
         # If we're allowed to break long words, then do so: put as much
         # of the next chunk onto the current line as will fit.
-        if self.break_long_words:
+        if self.break_long_words and space_left > 0:
             # Tabulate Custom: Build the string up piece-by-piece in order to
             # take each charcter's width into account
             chunk = reversed_chunks[-1]

test/test_textwrapper.py

@@ -15,9 +15,9 @@ def test_wrap_multiword_non_wide():
         orig = OTW(width=width)
         cust = CTW(width=width)
 
-        assert orig.wrap(data) == cust.wrap(
-            data
-        ), "Failure on non-wide char multiword regression check for width " + str(width)
+        assert [line.rstrip() for line in orig.wrap(data)] == [
+            line.rstrip() for line in cust.wrap(data)
+        ], "Failure on non-wide char multiword regression check for width " + str(width)
 
 
 def test_wrap_multiword_non_wide_with_hypens():
@@ -27,9 +27,9 @@ def test_wrap_multiword_non_wide_with_hypens():
         orig = OTW(width=width)
         cust = CTW(width=width)
 
-        assert orig.wrap(data) == cust.wrap(
-            data
-        ), "Failure on non-wide char hyphen regression check for width " + str(width)
+        assert [line.rstrip() for line in orig.wrap(data)] == [
+            line.rstrip() for line in cust.wrap(data)
+        ], "Failure on non-wide char hyphen regression check for width " + str(width)
 
 
 def test_wrap_longword_non_wide():