Global propigate -> propagate change to correct spelling. Additionally found a couple of insures that should be ensure.

2 files changed, 2 insertions, 2 deletions

diff --git a/lib/sqlalchemy/sql/compiler.py b/lib/sqlalchemy/sql/compiler.py
index 851bc30ac..80a4d7f52 100644
--- a/lib/sqlalchemy/sql/compiler.py
+++ b/lib/sqlalchemy/sql/compiler.py
@@ -475,7 +475,7 @@ class DefaultCompiler(engine.Compiled):
 
         correlate_froms = set(sql._from_objects(*froms))
 
-        # TODO: might want to propigate existing froms for select(select(select))
+        # TODO: might want to propagate existing froms for select(select(select))
         # where innermost select should correlate to outermost
         # if existingfroms:
         #     correlate_froms = correlate_froms.union(existingfroms)
diff --git a/lib/sqlalchemy/sql/expression.py b/lib/sqlalchemy/sql/expression.py
index 2838cc896..2fa3fc36f 100644
--- a/lib/sqlalchemy/sql/expression.py
+++ b/lib/sqlalchemy/sql/expression.py
@@ -2791,7 +2791,7 @@ class _ColumnClause(_Immutable, ColumnElement):
         return _BindParamClause(self.name, obj, type_=self.type, unique=True)
 
     def _make_proxy(self, selectable, name=None, attach=True):
-        # propigate the "is_literal" flag only if we are keeping our name,
+        # propagate the "is_literal" flag only if we are keeping our name,
         # otherwise its considered to be a label
         is_literal = self.is_literal and (name is None or name == self.name)
         c = _ColumnClause(name or self.name, selectable=selectable, type_=self.type, is_literal=is_literal)