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Serialize FTP typecodes without mutating the URI #252

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Serialize FTP typecodes without mutating the URI #252

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adf6874
Serialize FTP typecodes without mutating the URI
OskarEichler Aug 27, 2026
90e4556
test: cover URI regression
OskarEichler Aug 28, 2026
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9 changes: 3 additions & 6 deletions lib/uri/ftp.rb
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Original file line number Diff line number Diff line change
Expand Up @@ -249,14 +249,11 @@ def set_path(v)

# Returns a String representation of the URI::FTP.
def to_s
save_path = nil
if @typecode
save_path = @path
@path = @path + TYPECODE_PREFIX + @typecode
end
str = super
if @typecode
@path = save_path
suffix_length = (@query ? @query.length + 1 : 0) +
(@fragment ? @fragment.length + 1 : 0)
str.insert(-suffix_length - 1, TYPECODE_PREFIX + @typecode)
end

return str
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9 changes: 9 additions & 0 deletions test/uri/test_ftp.rb
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Expand Up @@ -6,6 +6,15 @@ class URI::TestFTP < Test::Unit::TestCase
def setup
end


def test_to_s_does_not_mutate_frozen_ftp_uri
uri = URI.parse("ftp://example.test/file;type=i?download=1#section").freeze

2.times do
assert_equal("ftp://example.test/file;type=i?download=1#section", uri.to_s)
end
end

def test_parse
url = URI.parse('ftp://user:pass@host.com/abc/def')
assert_kind_of(URI::FTP, url)
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