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News

3.2.0 - 2025-12-17

Improvements

  • Improved documents.
    • GH-179
    • GH-188
    • GH-189
    • GH-190
    • GH-191
    • GH-192
    • GH-193
    • GH-194
    • Patch by Burdette Lamar

Thanks

  • Burdette Lamar

3.1.9 - 2025-12-01

Improvements

  • [DOC] Tweaks for StringIO#each_line

    • GH-165

  • [DOC] Doc for StringIO.size

    • GH-175

  • [DOC] Tweaks for StringIO#fsync

    • GH-173

  • [DOC] Fix #seek link

    • GH-174

  • Add a note about chilled string support to 3.1.8 release note

    • GH-180 fixes GH-179

Fixes

  • JRuby: Removed use of RubyBasicObject.flags
    • GH-182

Thanks

  • Burdette Lamar

  • Charles Oliver Nutter

3.1.8 - 2025-11-12

Improvements

  • Improved documents

    • Patch by Burdette Lamar

  • Improved chilled string support

    • GH-128

Fixes

  • Fixed SEGV in StringIO#seek with SEEK_END on StringIO.new(nil)

    • GH-137
    • Patch by koh-sh

  • Fixed SEGV in StringIO#read on StringIO.new(nil)

  • Fixed SEGV in StringIO#pread on StringIO.new(nil)

  • Fixed SEGV in StringIO#eof? on StringIO.new(nil)

  • JRuby: Fixed a bug that StringIO#read doesn't clear code range

    • GH-156
    • Patch by Karol Bucek

Thanks

  • koh-sh

  • Burdette Lamar

  • Karol Bucek

3.1.7 - 2025-04-21

Improvements

  • CRuby: Added support for rb_io_mode_t that will be introduced in Ruby 3.5 or later.
    • GH-129
    • Patch by Samuel Williams

Thanks

  • Samuel Williams

3.1.6 - 2025-03-25

Fixes

  • CRuby: Fix SEGV at unget to a null device StringIO
  • JRuby:
    • Fix NullPointerException at unget to a null device StringIO
    • Use proper checkEncoding signature
    • Update strioWrite logic to match CRuby
    • GH-124

3.1.5 - 2025-02-21

Improvements

  • JRuby: Improved compatibility with CRuby for StringIO#seek with frozen string.
    • GH-119
    • GH-121

3.1.4 - 2025-02-20

Improvements

  • JRuby: Improved compatibility with CRuby.
    • GH-116

Fixes

  • CRuby: Fixed a bug that StringIO may mutate a shared string.
    • GH-117

3.1.3 - 2025-02-14

Fixes

  • JRuby: Fixed a bug that JRuby may not be able to be started
    • GH-112
    • GH-113
    • Reported by Karol Bucek

Thanks

  • Karol Bucek

3.1.2 - 2024-11-07

Improvements

  • JRuby: Added support for detecting encoding by BOM.
    • GH-100
    • GH-101

Fixes

Thanks

  • manun

3.1.1 - 2024-06-13

Improvements

  • JRuby: Improved.

    • GH-83
    • GH-84
    • GH-85

  • Added StringIO::MAX_LENGTH.

  • Added support for NULL StringIO by StringIO.new(nil).

  • Improved IO compatibility for partial read.

Fixes

Thanks

  • Tiago Cardoso

3.1.0 - 2023-11-28

Fixes

  • TruffleRuby: Do not compile the C extension

    GH-71

3.0.9 - 2023-11-08

Improvements

  • JRuby: Aligned StringIO#gets behavior with the C implementation.

    GH-61

Fixes

  • CRuby: Fixed StringIO#pread with the length 0.

    Patch by Jean byroot Boussier.

    GH-67

  • CRuby: Fixed a bug that StringIO#gets with non ASCII compatible encoding such as UTF-16 doesn't detect correct new line characters.

    Reported by IWAMOTO Kouichi.

    GH-68

Thanks

  • Jean byroot Boussier

  • IWAMOTO Kouichi

3.0.8 - 2023-08-10

Improvements

  • Added StringIO#pread.

    Patch by Jean byroot Boussier.

    GH-56

  • JRuby: Added StringIO::VERSION.

    GH-57 GH-59

Thanks

  • Jean byroot Boussier

3.0.7 - 2023-06-02

  • CRuby: Avoid direct struct usage. This change is for supporting Ruby 3.3.

    GH-54

3.0.6 - 2023-04-14

Improvements

  • CRuby: Added support for write barrier.

  • JRuby: Added missing arty-checking.

    GH-48

  • JRuby: Added support for StringIO.new(encoding:).

    GH-45

3.0.5 - 2023-02-02

Improvements

Fixes

  • Fixed a bug that StringIO#gets("2+ character", chomp: true) did not remove the separator at the end. [Bug #19389]

3.0.4 - 2022-12-09

Improvements

  • JRuby: Changed to use flag registry. [GitHub#33]

3.0.3 - 2022-12-08

Improvements

Fixes

  • Fixed a bug that large StringIO#ungetc/StringIO#ungetbyte break internal buffer.

  • Fixed a bug that StringIO#each("2+ character", chomp: true) cause infinite loop. [Bug #18769]

  • Fixed a bug that StringIO#each(nil, chomp: true) chomps. [Bug #18770]

  • Fixed a bug that StringIO#each("", chomp: true) isn't compatible with IO#each("", chomp: true). [Bug #18768]

  • Fixed a bug that StringIO#set_encoding doesn't accept external and internal encodings pairo. [GitHub#16] [Reported by Kenta Murata]

  • Fixed a bug that StringIO#truncate isn't compatible with File#truncate.

Thanks

  • Kenta Murata

  • Burdette Lamar