From 19b562b3459fc9dfae518ee0bd537dc70512c086 Mon Sep 17 00:00:00 2001
From: William Archbell <william@archbell.com>
Date: Wed, 27 May 2020 21:15:21 -0700
Subject: [PATCH] Filter empty features from command line. Allows cargo
 workspaces to function.

---
 src/cargo_shim/mod.rs | 13 ++++++++++++-
 1 file changed, 12 insertions(+), 1 deletion(-)

diff --git a/src/cargo_shim/mod.rs b/src/cargo_shim/mod.rs
index 07acc85..706b2ab 100644
--- a/src/cargo_shim/mod.rs
+++ b/src/cargo_shim/mod.rs
@@ -299,6 +299,12 @@ impl CargoProject {
             command.arg( "--all-features" );
         }
 
+        let features = features
+            .iter()
+            .filter(|f| !f.is_empty())
+            .cloned()
+            .collect::<Vec<_>>();
+
         if !features.is_empty() {
             command.arg( "--features" );
             command.arg( &features.join( " " ) );
@@ -697,8 +703,13 @@ impl BuildConfig {
         if self.enable_all_features {
             command.arg( "--all-features" );
         }
+        
+        let features = self.features
+            .iter()
+            .filter(|f| !f.is_empty())
+            .collect::<Vec<_>>();
 
-        if !self.features.is_empty() {
+        if !features.is_empty() {
             command.arg( "--features" );
             command.arg( &self.features.join( " " ) );
         }