[ruby-dev:50271] [Ruby trunk Bug#13957] readline が SHARABLE_MIDDLE_SUBSTRING=1 を考慮していない
From:
tommy@...
Date:
2017-09-30 14:33:20 UTC
List:
ruby-dev #50271
Issue #13957 has been reported by tommy (Masahiro Tomita).
----------------------------------------
Bug #13957: readline が SHARABLE_MIDDLE_SUBSTRING=1 を考慮していない
https://bugs.ruby-lang.org/issues/13957
* Author: tommy (Masahiro Tomita)
* Status: Open
* Priority: Normal
* Assignee:
* Target version:
* ruby -v: ruby 2.5.0dev (2017-09-29 trunk 60062) [x86_64-linux]
* Backport: 2.3: UNKNOWN, 2.4: UNKNOWN
----------------------------------------
SHARABLE_MIDDLE_SUBSTRING=1 でコンパイルしたRubyで、Readline.insert_text の文字列が正しく扱われません。
```
% ruby -rreadline -e 'p Readline.insert_text(("a"*100)[0,24]).line_buffer'
"aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa"
```
次のパッチで直ると思います。
```diff
diff --git a/ext/readline/readline.c b/ext/readline/readline.c
index 253798f9e6..deebc282f5 100644
--- a/ext/readline/readline.c
+++ b/ext/readline/readline.c
@@ -93,6 +93,7 @@ static char **readline_attempted_completion_function(const char *text,
#define OutputStringValue(str) do {\
SafeStringValue(str);\
+ StringValueCStr(str);\
(str) = rb_str_conv_enc((str), rb_enc_get(str), rb_locale_encoding());\
} while (0)\
```
パッチ適用後
```
% ruby -rreadline -e 'p Readline.insert_text(("a"*100)[0,24]).line_buffer'
"aaaaaaaaaaaaaaaaaaaaaaaa"
```
--
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