Readline.completion_append_character

Ruby Development
1

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require “readline”

p RUBY_DESCRIPTION
p Readline::VERSION
p Readline.completion_append_character
Readline.completion_proc = ->(input){[input]}
IO.pipe do |r, w|
Readline.output = (w << “Readline\t”).reopen("/dev/null")
Readline.input = r
Readline.completion_append_character = nil
p Readline.completion_append_character
p Readline.readline
p Readline.completion_append_character
end

Debian GNU/Linux (sid) libreadline-gplv2-dev (5.2-8)

>> “ruby 1.9.3dev (2011-04-29 trunk 31382) [x86_64-linux]”

>> “5.2”

>> " "

>> nil

>> “Readline”

>> nil

Debian GNU/Linux (sid) libreadline6-dev (6.2-1)

>> “ruby 1.9.3dev (2011-04-29 trunk 31382) [x86_64-linux]”

>> “6.2”

>> " "

>> nil (nil $B$K%;%C%H$O=PMh$k$1$I(B)

>> "Readline " ($BKvHx$K%9%Z!<%9$,IU$$$F$7$^$C$F(B)

>> " " ($B%j%;%C%H$5$l$F$7$^$&(B)

changelog
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This document details the changes between this version, readline-6.0,
and the previous version, readline-5.2.
(snip)
f. Fixed a bug that caused the completion append character to not be
reset to
the default after an application-specified completion function
changed it.

2

$B$$$^$$$G$9!#(B

From: Takao K. <kouji_at_takao7.net>
Date: Sat, 30 Apr 2011 13:35:51 +0900

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6$B$N>l9g$K(BReadline.completion_append_character$B$K(Bnil$B$r;XDj$G$-$J$$IT6q9g$,$"$k(B

nil$B$r%;%C%H$7$F$bJd408e$K%9%Z!<%9$,DI2C$5$l$kLdBj$G$9$M!#(B
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3

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$B0J>e$G$9!#(B
$B$h$m$7$/$*4j$$$7$^$9!#(B

On 2011/04/29, at 22:37, Nobuhiro IMAI wrote:

p RUBY_DESCRIPTION
end

>> “ruby 1.9.3dev (2011-04-29 trunk 31382) [x86_64-linux]”

This document details the changes between this version, readline-6.0,
and the previous version, readline-5.2.
(snip)
f. Fixed a bug that caused the completion append character to not be reset to
the default after an application-specified completion function changed it.

Nobuhiro IMAI [email protected]
Key fingerprint = E57F 2482 4074 13BC 3B9A 165B C689 5B16 A620 4657

TAKAO Kouji [email protected]
blog: 高尾宏治日記 on はてな
twitter: takaokouji / projects: ruby, s7-seven

4

なかだです。

(11/04/30 14:40), Nobuhiro IMAI wrote:

影響範囲がよく分かっていませんが、Ruby の readline 側で
rl_completion_append_character 相当のものを保持しておいて、補完する時
にセットしてやればいいのではないでしょうか？

やってみたら何か動いてそう、というレベルのものですが、参考までにパッチ
を付けてみます。Ruby のスクリプトから readline.so を使う限りはこれでよ
さそうですが、拡張ライブラリから直接 rl_completion_append_character を
いじるようなことがある(のかどうかは分かってません)と破綻しちゃいそうです。

もうちょっとシンプルに、readline()呼び出し前に保存しておいて補完すると
きにはそれを使うというのはどうでしょうか。readline()呼び出しの最中に他
のスレッドから変更しても上書きされてしまいますが、元々マルチスレッドで
動かせるものでもないと思います。

diff --git a/ext/readline/readline.c b/ext/readline/readline.c
index 198f0e6…e1c8316 100644
— a/ext/readline/readline.c
+++ b/ext/readline/readline.c
@@ -70,6 +70,9 @@ static ID id_orig_prompt, id_last_prompt;

static int (*history_get_offset_func)(int);
static int (*history_replace_offset_func)(int);
+#ifdef HAVE_RL_COMPLETION_APPEND_CHARACTER
+static int readline_completion_append_character;
+#endif

static char **readline_attempted_completion_function(const char *text,
int start, int
end);
@@ -258,6 +261,9 @@ insert_ignore_escape(VALUE self, VALUE prompt)
static VALUE
readline_get(VALUE prompt)
{
+#ifdef HAVE_RL_COMPLETION_APPEND_CHARACTER

  • readline_completion_append_character =
    rl_completion_append_character;
    +#endif
    return (VALUE)readline((char *)prompt);
    }

@@ -642,6 +648,9 @@ readline_attempted_completion_function(const char
*text, int start, int end)
proc = rb_attr_get(mReadline, completion_proc);
if (NIL_P(proc))
return NULL;
+#ifdef HAVE_RL_COMPLETION_APPEND_CHARACTER

  • rl_completion_append_character =
    readline_completion_append_character;
    +#endif
    #ifdef HAVE_RL_ATTEMPTED_COMPLETION_OVER
    rl_attempted_completion_over = 1;
    #endif
5

$B9bHx$G$9!#(B

On 2011/12/22, at 22:52, Nobuhiro IMAI wrote:

$B$($k$H$&$l$7$$$G$9!#(B
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$B$b$&>/$7$*BT$A$/$@$5$$$^$;!#(B

TAKAO Kouji [email protected]
blog: 高尾宏治日記 on はてな
twitter: takaokouji / projects: ruby, s7-seven

6

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From: Nobuyoshi N. <nobu_at_ruby-lang.org>
Date: Wed, 21 Dec 2011 17:06:48 +0900

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