From 380af78843891b0994f625d392fad674c1bc4fef Mon Sep 17 00:00:00 2001
From: Hans Bolinder <hasse@erlang.org>
Date: Mon, 4 Jun 2018 13:58:02 +0200
Subject: stdlib: Make pP insert no line breaks with field width zero

See also https://bugs.erlang.org/browse/ERL-607.

A zero field width used to insert line breaks "everywhere", but with
this patch no line breaks are inserted.
---
 lib/stdlib/src/io_lib_pretty.erl | 2 ++
 1 file changed, 2 insertions(+)

(limited to 'lib/stdlib/src/io_lib_pretty.erl')

diff --git a/lib/stdlib/src/io_lib_pretty.erl b/lib/stdlib/src/io_lib_pretty.erl
index 3d5a979b3e..dca1b37ef3 100644
--- a/lib/stdlib/src/io_lib_pretty.erl
+++ b/lib/stdlib/src/io_lib_pretty.erl
@@ -131,6 +131,8 @@ print(Term, Col, Ll, D, M0, T, RecDefFun, Enc, Str) when is_tuple(Term);
     %% use Len as CHAR_MAX if M0 = -1
     M = max_cs(M0, Len),
     if
+        Ll =:= 0 ->
+            write(If);
         Len < Ll - Col, Len =< M ->
             %% write the whole thing on a single line when there is room
             write(If);
-- 
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