allow blank lines in rules

1 files changed, 6 insertions, 2 deletions

diff --git a/src/makefile/mod.rs b/src/makefile/mod.rs
index 4c39160..359355e 100644
--- a/src/makefile/mod.rs
+++ b/src/makefile/mod.rs
@@ -371,9 +371,13 @@ impl Makefile {
                         let prerequisites = self.expand_macros(&prerequisites, None);
                         let prerequisites = prerequisites.split_whitespace().map(|x| x.into()).collect::<Vec<String>>();
 
-                        while lines_iter.peek().and_then(|(_, x)| x.as_ref().ok()).map_or(false, |line| line.starts_with('\t')) {
+                        while lines_iter.peek().and_then(|(_, x)| x.as_ref().ok())
+                            .map_or(false, |line| line.starts_with('\t') || line.is_empty()) {
                             let line = lines_iter.next().unwrap().1.unwrap();
-                            let mut line: String = line.strip_prefix("\t").unwrap().into();
+                            let mut line: String = line.strip_prefix("\t").unwrap_or(&line).into();
+                            if line.is_empty() {
+                                continue;
+                            }
                             while line.ends_with('\\') {
                                 match lines_iter.next() {
                                     Some((_, Ok(next_line))) => {