Added start_line and end_line args to with_line_numbers, and more docstring

1 files changed, 7 insertions, 6 deletions

diff --git a/pyparsing/helpers.py b/pyparsing/helpers.py
index 251092a..27d293a 100644
--- a/pyparsing/helpers.py
+++ b/pyparsing/helpers.py
@@ -992,23 +992,24 @@ class IndentedBlock(ParseElementEnhance):
     def parseImpl(self, instring, loc, doActions=True):
         # advance parse position to non-whitespace by using an Empty()
         # this should be the column to be used for all subsequent indented lines
-        loc = Empty().preParse(instring, loc)
+        anchor_loc = Empty().preParse(instring, loc)
 
         # see if self.expr matches at the current location - if not it will raise an exception
         # and no further work is necessary
-        self.expr.try_parse(instring, loc, doActions)
+        self.expr.try_parse(instring, anchor_loc, doActions)
 
-        indent_col = col(loc, instring)
+        indent_col = col(anchor_loc, instring)
         peer_parse_action = match_only_at_col(indent_col)
-        peer_expr = FollowedBy(self.expr).add_parse_action(peer_parse_action)
-        inner_expr = Empty() + peer_expr.suppress() + self.expr
+        peer_detect_expr = Empty().add_parse_action(peer_parse_action)
+        inner_expr = Empty() + peer_detect_expr + self.expr
+        inner_expr.set_name(f"inner {hex(id(inner_expr))[-4:].upper()}@{indent_col}")
 
         if self._recursive:
             indent_parse_action = condition_as_parse_action(
                 lambda s, l, t, relative_to_col=indent_col: col(l, s) > relative_to_col
             )
             indent_expr = FollowedBy(self.expr).add_parse_action(indent_parse_action)
-            inner_expr += Opt(indent_expr + self)
+            inner_expr += Opt(Group(indent_expr + self.copy()))
 
         return OneOrMore(inner_expr).parseImpl(instring, loc, doActions)