fix reading empty lines

2 files changed, 5 insertions, 4 deletions

diff --git a/src/runner/builtins/command.rs b/src/runner/builtins/command.rs
index 7d84c8f..a2ba35d 100644
--- a/src/runner/builtins/command.rs
+++ b/src/runner/builtins/command.rs
@@ -185,17 +185,18 @@ impl Io {
         }
     }
 
-    pub async fn read_line_stdin(&self) -> anyhow::Result<String> {
+    pub async fn read_line_stdin(&self) -> anyhow::Result<(String, bool)> {
         let mut buf = String::new();
         if let Some(fh) = self.stdin() {
             if let File::In(fh) = &mut *fh.lock_arc().await {
                 fh.read_line(&mut buf).await?;
             }
         }
+        let done = buf.is_empty();
         if buf.ends_with('\n') {
             buf.truncate(buf.len() - 1);
         }
-        Ok(buf)
+        Ok((buf, done))
     }
 
     pub async fn write_stdout(&self, buf: &[u8]) -> anyhow::Result<()> {
diff --git a/src/runner/builtins/mod.rs b/src/runner/builtins/mod.rs
index 19d250a..5205856 100644
--- a/src/runner/builtins/mod.rs
+++ b/src/runner/builtins/mod.rs
@@ -213,8 +213,8 @@ fn read(
             bail!(cfg, exe, "usage: read var");
         };
 
-        let (done, val) = match cfg.io().read_line_stdin().await {
-            Ok(line) => (line.is_empty(), line),
+        let (val, done) = match cfg.io().read_line_stdin().await {
+            Ok((line, done)) => (line, done),
             Err(e) => {
                 bail!(cfg, exe, e);
             }