# HG changeset patch
# User Kim Alvefur <zash@zash.se>
# Date 1625279365 -7200
# Node ID 0fe6a9a3676f3419257b78cd7cad2731227df81d
# Parent  b6ea0148ad37a23f388719bf8ac4893f8b886235
util.format: Allow newlines but ensure following lines are indented

This should a) prevent injection of text that looks like legitimate log
lines and b) not mangle tracebacks.

diff -r b6ea0148ad37 -r 0fe6a9a3676f util/format.lua
--- a/util/format.lua	Sat Jul 03 04:24:13 2021 +0200
+++ b/util/format.lua	Sat Jul 03 04:29:25 2021 +0200
@@ -60,7 +60,7 @@
 				args[i] = dump(arg);
 				spec = "%s";
 			elseif option == "s" then
-				args[i] = tostring(arg):gsub("[%z\1-\31\127]", control_symbols);
+				args[i] = tostring(arg):gsub("[%z\1-\8\11-\31\127]", control_symbols):gsub("\n\t?", "\n\t");
 			elseif type(arg) ~= "number" then -- arg isn't number as expected?
 				args[i] = tostring(arg);
 				spec = "[%s]";