If writing an error to the pager fails, write it to stderr

Josh Triplett created 9 years ago

This ensures that errors about the pager itself, such as broken pipes,
show up somewhere.

Change summary

src/main.rs | 4 +++-
1 file changed, 3 insertions(+), 1 deletion(-)

Detailed changes

src/main.rs

@@ -624,7 +624,9 @@ impl Output {
 
     fn write_err(&mut self, msg: &str) {
         if self.include_stderr {
-            write!(self, "{}", msg).unwrap();
+            if write!(self, "{}", msg).is_err() {
+                write!(std::io::stderr(), "{}", msg).unwrap();
+            }
         } else {
             write!(std::io::stderr(), "{}", msg).unwrap();
         }