diff --git a/src/future/exec/CommandException.php b/src/future/exec/CommandException.php
--- a/src/future/exec/CommandException.php
+++ b/src/future/exec/CommandException.php
@@ -61,9 +61,11 @@
     $len = strlen($string);
     if ($len > $limit) {
       $cut = $len - $limit;
-      $suffix = pht('... (%s more byte(s)) ...', new PhutilNumber($cut));
-      if ($cut > strlen($suffix)) {
-        $string = substr($string, 0, $limit).$suffix;
+      $middle = pht('... (%s more byte(s)) ...', new PhutilNumber($cut));
+      if ($cut > strlen($middle)) {
+        $start = substr($string, 0, $limit * 2 / 3);
+        $end = substr($string, $len - $limit / 3);
+        $string = $start.$middle.$end;
       }
     }