| Age | Commit message (Expand) | Author |
| 2018-09-19 | Removed `String#try_convert` method from `mruby-string-ext` gem. | Yukihiro "Matz" Matsumoto |
| 2018-09-19 | Remove implicit conversion using `to_str` method. | Yukihiro "Matz" Matsumoto |
| 2018-04-21 | Implement `String#upto` in Ruby. | Yukihiro "Matz" Matsumoto |
| 2018-04-19 | CRuby2.6 stops deprecating `String#lines` with a block. | Yukihiro "Matz" Matsumoto |
| 2017-12-12 | Modifying frozen objects will raise `FrozenError`. | Yukihiro "Matz" Matsumoto |
| 2017-10-17 | Add `{String,Symbol}#casecmp?`; CRuby2.4 | Yukihiro "Matz" Matsumoto |
| 2017-06-14 | Reimplement String#upto | ksss |
| 2017-03-10 | Terminate loop if generated string longer than the last; ref #3489 | Yukihiro "Matz" Matsumoto |
| 2017-03-05 | Check modifiable for String `bang' methods | ksss |
| 2017-02-10 | String#ljust and String#rjust reimplemented with optimized Ruby | Tomasz Dabrowski |
| 2017-02-10 | String#ljust and String#rjust reimplementation (fix #3445) | Tomasz Dabrowski |
| 2017-01-04 | Rewrite String#prepend with Ruby | ksss |
| 2016-11-17 | String#{strip,lstrip,rstrip} may cause OOB access | Yukihiro "Matz" Matsumoto |
| 2016-09-28 | Removed trailing spaces | Nobuyoshi Nakada |
| 2016-07-27 | Reduce needless Array generation in some String methods | Kouhei Sutou |
| 2016-07-26 | Support to call without block to String#each_char | ksss |
| 2016-07-14 | String#insert should be destructive | ksss |
| 2016-01-30 | Add String#rjust to mruby-string-ext | Akira Moroo |
| 2015-11-24 | add {Array|Hash|String}.try_convert | takahashim |
| 2015-09-24 | UTF-8 string support in core | Yukihiro "Matz" Matsumoto |
| 2015-08-22 | Use #nil? instead of == nil. | INOUE Yasuyuki |
| 2015-01-13 | Add String#upto | Jun Hiroe |
| 2015-01-12 | add String#ljust into mruby-string-ext | takahashim |
| 2014-12-13 | Add String#insert | Jun Hiroe |
| 2014-11-23 | Fix String#slice! raise TypeError or return invalid value. | TOMITA Masahiro |
| 2014-06-19 | Modify return value of String#slice! if idx == self.size | Akito Mochizuki |
| 2014-06-15 | Implement String#slice_bang | Jun Hiroe |
| 2014-06-11 | String#clear: use String#replace to simple | ksss |
| 2014-06-03 | Merge pull request #2346 from suzukaze/add-string-comment2 | Yukihiro "Matz" Matsumoto |
| 2014-06-02 | Fix indent in String#casecmp comments | Jun Hiroe |
| 2014-06-02 | Add comments in String#lstrip, rstrip, strip, lstring_bang, rstrip_bang and s... | Jun Hiroe |
| 2014-04-20 | String#casecmp should be call `to_str` | ksss |
| 2013-12-27 | add String#partition and String#rpartition. | Tomoyuki Sahara |
| 2013-04-19 | Add String#swapcase,swapcase!,concat,casecmp,start_with,end_with | h2so5 |
| 2013-03-08 | add "strip" family to String. | Tomoyuki Sahara |