From dfbeba22a437bb2134f696f0d266dbf734944012 Mon Sep 17 00:00:00 2001
From: Melody Horn <melody@boringcactus.com>
Date: Thu, 25 Mar 2021 22:17:59 -0600
Subject: skip rule if there are no targets

---
 yapymake/makefile/__init__.py | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/yapymake/makefile/__init__.py b/yapymake/makefile/__init__.py
index cb6fe85..609281e 100644
--- a/yapymake/makefile/__init__.py
+++ b/yapymake/makefile/__init__.py
@@ -161,6 +161,9 @@ class Makefile:
                     command_token_strings.append(tokenize(next_line.lstrip('\t').rstrip('\n')))
                 commands = [CommandLine(c) for c in command_token_strings]
 
+                # apparently we can have no targets? if so, don't do anything
+                if len(targets) == 0:
+                    continue
                 # we don't know yet if it's a target rule or an inference rule
                 match = re.fullmatch(r'(?P<s2>(\.[^/.]+)?)(?P<s1>\.[^/.]+)', targets[0])
                 # we don't want to catch special targets, though
-- 
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