diff --git a/doc/csv/options/parsing/liberal_parsing.rdoc b/doc/csv/options/parsing/liberal_parsing.rdoc
index b8b9b00c98..603de28613 100644
--- a/doc/csv/options/parsing/liberal_parsing.rdoc
+++ b/doc/csv/options/parsing/liberal_parsing.rdoc
@@ -1,13 +1,13 @@
====== Option +liberal_parsing+
-Specifies the boolean value that determines whether
+Specifies the boolean or hash value that determines whether
CSV will attempt to parse input not conformant with RFC 4180,
such as double quotes in unquoted fields.
Default value:
CSV::DEFAULT_OPTIONS.fetch(:liberal_parsing) # => false
-For examples in this section:
+For the next two examples:
str = 'is,this "three, or four",fields'
Without +liberal_parsing+:
@@ -17,3 +17,22 @@ Without +liberal_parsing+:
With +liberal_parsing+:
ary = CSV.parse_line(str, liberal_parsing: true)
ary # => ["is", "this \"three", " or four\"", "fields"]
+
+Use the +backslash_quote+ sub-option to parse values that use
+a backslash to escape a double-quote character. This
+causes the parser to treat \"
as if it were
+""
.
+
+For the next two examples:
+ str = 'Show,"Harry \"Handcuff\" Houdini, the one and only","Tampa Theater"'
+
+With +liberal_parsing+, but without the +backslash_quote+ sub-option:
+ # Incorrect interpretation of backslash; incorrectly interprets the quoted comma as a field separator.
+ ary = CSV.parse_line(str, liberal_parsing: true)
+ ary # => ["Show", "\"Harry \\\"Handcuff\\\" Houdini", " the one and only\"", "Tampa Theater"]
+ puts ary[1] # => "Harry \"Handcuff\" Houdini
+
+With +liberal_parsing+ and its +backslash_quote+ sub-option:
+ ary = CSV.parse_line(str, liberal_parsing: { backslash_quote: true })
+ ary # => ["Show", "Harry \"Handcuff\" Houdini, the one and only", "Tampa Theater"]
+ puts ary[1] # => Harry "Handcuff" Houdini, the one and only