From ff2083c53eecc67c011b96b0b9a58331043e53cf Mon Sep 17 00:00:00 2001
From: Behdad Esfahbod <behdad@behdad.org>
Date: Wed, 10 Jan 2018 13:54:36 +0100
Subject: [PATCH] [util] Set stdio files to line buffering

So we can stream lines to hb-shape and read output.
---
 util/options.cc | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/util/options.cc b/util/options.cc
index f63607257..243b49b17 100644
--- a/util/options.cc
+++ b/util/options.cc
@@ -780,6 +780,8 @@ text_options_t::get_line (unsigned int *len)
     gs = g_string_new (nullptr);
   }
 
+  setlinebuf (fp);
+
   g_string_set_size (gs, 0);
   char buf[BUFSIZ];
   while (fgets (buf, sizeof (buf), fp)) {
@@ -817,6 +819,8 @@ output_options_t::get_file_handle (void)
     fail (false, "Cannot open output file `%s': %s",
 	  g_filename_display_name (output_file), strerror (errno));
 
+  setlinebuf (fp);
+
   return fp;
 }