Hints kitten: Adjust the default regex used to detect line numbers to handle line+column numbers

See #2268

docs/changelog.rst

@@ -10,6 +10,9 @@ To update |kitty|, :doc:`follow the instructions <binary>`.
 - Fix a regression in 0.17 that broke drawing of borders with non-minimal
   borders (:iss:`2474`)
 
+- Hints kitten: Adjust the default regex used to detect line numbers to handle
+  line+column numbers (:iss:`2268`)
+
 
 0.17.1 [2020-03-24]
 --------------------

kittens/hints/main.py

@@ -349,7 +349,7 @@ def parse_input(text: str) -> str:
 def linenum_marks(text: str, args: HintsCLIOptions, Mark: Type[Mark], extra_cli_args: Sequence[str], *a: Any) -> Generator[Mark, None, None]:
     regex = args.regex
     if regex == DEFAULT_REGEX:
-        regex = r'(?P<path>(?:\S*/\S+)|(?:\S+[.][a-zA-Z0-9]{2,7})):(?P<line>\d+)'
+        regex = r'(?P<path>(?:\S*/\S+?)|(?:\S+[.][a-zA-Z0-9]{2,7})):(?P<line>\d+)'
     yield from mark(regex, [brackets, quotes], text, args)