Fix #649: String escaping doesn't work in remote console

src/lua/box_net_box.lua

@@ -465,8 +465,9 @@ local remote_methods = {
                 eval_str = eval_str .. tostring(arg)
             else
                 arg = tostring(arg)
-                arg = string.gsub(arg, '"', '\\"')
-                eval_str = eval_str .. '"' .. arg .. '"'
+                arg = string.gsub(arg, ']]', ']].."]]"..[[')
+                arg = string.gsub(arg, "\n", ']].."\\n"..[[')
+                eval_str = eval_str .. '[[' .. arg .. ']]'
             end
         end
         eval_str = eval_str .. ")\n"

test/box/box.net.box.result

@@ -573,6 +573,26 @@ cnc:call('123')
 ---
 - error: '[string "123()"]:1: unexpected symbol near ''123'''
 ...
+-- gh-649: String escaping doesn't work in remote console
+function echo(...) return ... end
+---
+...
+#cn:call('echo', [[a \[\[ \091\091 b \093\093 c \n d \t e \]\] f ]])[1][1]
+---
+- 46
+...
+#cnc:call('echo', [[a \[\[ \091\091 b \093\093 c \n d \t e \]\] f ]])[1][1]
+---
+- 46
+...
+#cn:call('echo', "a [[ \091\091 b \093\093 c \n d \t e ]] f ")[1][1]
+---
+- 28
+...
+#cnc:call('echo', "a [[ \091\091 b \093\093 c \n d \t e ]] f ")[1][1]
+---
+- 28
+...
 -- #545 user or password is not defined
 remote:new(LISTEN.host, LISTEN.service, { user = 'test' })
 ---

test/box/box.net.box.test.lua

@@ -224,6 +224,12 @@ cnc:call('console_unpack_test', 1)
 cn:call('123')
 cnc:call('123')
 
+-- gh-649: String escaping doesn't work in remote console
+function echo(...) return ... end
+#cn:call('echo', [[a \[\[ \091\091 b \093\093 c \n d \t e \]\] f ]])[1][1]
+#cnc:call('echo', [[a \[\[ \091\091 b \093\093 c \n d \t e \]\] f ]])[1][1]
+#cn:call('echo', "a [[ \091\091 b \093\093 c \n d \t e ]] f ")[1][1]
+#cnc:call('echo', "a [[ \091\091 b \093\093 c \n d \t e ]] f ")[1][1]
 
 -- #545 user or password is not defined
 remote:new(LISTEN.host, LISTEN.service, { user = 'test' })