Add text-align-last

weasyprint/css/properties.py

@@ -148,6 +148,7 @@ INITIAL_VALUES = {
     'letter_spacing': 'normal',
     'tab_size': 8,
     'text_align': 'start',
+    'text_align_last': 'auto',
     'text_indent': Dimension(0, 'px'),
     'text_transform': 'none',
     'white_space': 'normal',
@@ -258,6 +259,7 @@ INHERITED = {
     'quotes',
     'tab_size',
     'text_align',
+    'text_align_last',
     'text_decoration_line',
     'text_decoration_color',
     'text_decoration_style',

weasyprint/css/validation/properties.py

@@ -1067,6 +1067,13 @@ def text_align(keyword):
     return keyword in ('left', 'right', 'center', 'justify', 'start', 'end')
 
 
+@property()
+@single_keyword
+def text_align_last(keyword):
+    """``text-align-last`` property validation."""
+    return keyword in ('auto', 'left', 'right', 'center', 'justify', 'start', 'end')
+
+
 @property()
 def text_decoration_line(tokens):
     """``text-decoration-line`` property validation."""

weasyprint/layout/inlines.py

@@ -1313,6 +1313,12 @@ def text_align(context, line, available_width, last):
         return 0
 
     align = line.style['text_align']
+    align_last = line.style['text_align_last']
+    if last:
+      if align_last != 'auto':
+        align = align_last
+      elif align == 'justify':
+        align = 'start'
     space_collapse = line.style['white_space'] in (
         'normal', 'nowrap', 'pre-line')
     if align in ('left', 'right'):
@@ -1320,8 +1326,6 @@ def text_align(context, line, available_width, last):
             align = 'start'
         else:
             align = 'end'
-    if align == 'justify' and last:
-        align = 'start'
     if align == 'start':
         return 0
     offset = available_width - line.width