From 7857e9f871caaf0b95f9eba9c4cdefb5046a9b2a Mon Sep 17 00:00:00 2001
From: Melody Horn <melody@boringcactus.com>
Date: Tue, 13 Apr 2021 20:53:44 -0600
Subject: spell SUFFIXES correctly smdh

---
 src/makefile/input.rs | 32 ++++++++++++++++++++++++++------
 1 file changed, 26 insertions(+), 6 deletions(-)

diff --git a/src/makefile/input.rs b/src/makefile/input.rs
index cb53966..6860e80 100644
--- a/src/makefile/input.rs
+++ b/src/makefile/input.rs
@@ -527,10 +527,11 @@ impl<'a, 'parent, R: BufRead> MakefileReader<'a, 'parent, R> {
         }
     }
 
-    fn special_target_has_prereq(&self, target: &str, name: &str) -> bool {
+    fn special_target_has_prereq(&self, target: &str, name: &str, empty_counts: bool) -> bool {
         match self.targets.get(target) {
             Some(target) => {
-                target.prerequisites.is_empty() || target.prerequisites.iter().any(|e| e == name)
+                (empty_counts && target.prerequisites.is_empty())
+                    || target.prerequisites.iter().any(|e| e == name)
             }
             None => false,
         }
@@ -675,9 +676,9 @@ impl<'a, 'parent, R: BufRead> MakefileReader<'a, 'parent, R> {
 
         // don't interpret things like `.tmp: ; mkdir -p $@` as single-suffix rules
         let inference_match = inference_match.and_then(|inference| {
-            if self.special_target_has_prereq(".SUFFIXES", inference.s1)
+            if self.special_target_has_prereq(".SUFFIXES", inference.s1, false)
                 && (inference.s2.is_empty()
-                    || self.special_target_has_prereq(".SUFFIXES", inference.s2))
+                    || self.special_target_has_prereq(".SUFFIXES", inference.s2, false))
             {
                 Some(inference)
             } else {
@@ -715,7 +716,7 @@ impl<'a, 'parent, R: BufRead> MakefileReader<'a, 'parent, R> {
                 match self.targets.get_mut(target) {
                     Some(old_target)
                         if commands.is_empty()
-                            && !(target == ".SUFIXES" && prerequisites.is_empty()) =>
+                            && !(target == ".SUFFIXES" && prerequisites.is_empty()) =>
                     {
                         let new_prerequisites = prerequisites
                             .iter()
@@ -1074,14 +1075,33 @@ info:
 
     #[test]
     fn sdafjijsafjdoisdf() -> R {
-        let file = "\
+        let file = "
 cursed:
 \techo this uses the bash variable '$$#' and all that \\
 \techo yeah its value is $$# and it's really cool
+";
+        let args = Args::empty();
+        let makefile = MakefileReader::read(&args, MacroSet::new(), Cursor::new(file), "")?;
+        let _makefile = makefile.finish();
+        Ok(())
+    }
+
+    #[test]
+    fn double_suffix_rule() -> R {
+        let file = "
+.c.o:
+\techo yeet
+.SUFFIXES:
+.l.a:
+\techo hey
+.SUFFIXES: .test .post
+.post.test:
+\techo hiiii
 ";
         let args = Args::empty();
         let makefile = MakefileReader::read(&args, MacroSet::new(), Cursor::new(file), "")?;
         let makefile = makefile.finish();
+        assert_eq!(makefile.inference_rules.len(), 2);
         Ok(())
     }
 }
-- 
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