# \[Bug #3126\] irb/completion$B$G(BTypeError

**URL:** <https://www.ruby-forum.com/t/bug-3126-irb-completion-b-g-btypeerror/186675>\
**Category:** Development\
**Created:** [April 11, 2010, 4:35am UTC](https://www.ruby-forum.com/t/bug-3126-irb-completion-b-g-btypeerror/186675 "2010-04-11T04:35:05Z")\
**Posts on this page:** 3\
**Page:** 1

<div class="post-metadata">

**Author:** ![Kazuhiro\_NISHIYAMA](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/k/77aa72/32.png) [@Kazuhiro\_NISHIYAMA](https://www.ruby-forum.com/u/Kazuhiro_NISHIYAMA)\
**Post date:** [April 11, 2010, 4:35am UTC](https://www.ruby-forum.com/t/bug-3126-irb-completion-b-g-btypeerror/186675/1 "2010-04-11T04:35:05Z")

</div>

Bug #3126: irb/completione$B$Ge(BTypeError  
[http://redmine.ruby-lang.org/issues/show/3126](http://redmine.ruby-lang.org/issues/show/3126)

e$B5/I\<\<Te(B: Kazuhiro NISHIYAMA  
e$B%9%F!\<%?%9e(B: Open, e$BM%@hEYe(B: Normal  
e$BC4Ev\<Te(B: Keiju Ishitsuka, e$B%+%F%4%je(B: lib, Target version:  
1.9.2  
ruby -v: ruby 1.9.2dev (2010-04-10 trunk 27284) [x86\_64-linux]

irb/completion  
e$B$rFI$\_9~$s$G$$$k$H!Ve(Ba.e$B!W$d!Ve(BC::e$B!W$J$I$N8e$K%?%V%-!\<$r2!$9$He(B  
…/irb/completion.rb:137:in `quote': can't convert NilClass to String (TypeError) e$B$de(B .../irb/completion.rb:87:in `quote’: can’t convert NilClass to String  
(TypeError)  
e$B$G=\*N;$7$F$7$^$$$^$9!#e(B

e$B0J2\<$N=$@5$GD\>$k$h$&$G$9!#e(B

diff --git a/lib/irb/completion.rb b/lib/irb/completion.rb  
index a345c23…e059bc4 100644  
— a/lib/irb/completion.rb  
+++ b/lib/irb/completion.rb  
@@ -81,10 +81,10 @@ module IRB  
candidates.grep(/^#{receiver}/).collect{|e| “::” + e}

# when /^(((::)?[A-Z][^:.(]_)+)::?([^:.]_)$/

- 

```
 when /^([A-Z].*)::([^:.]+)*$/

```

- 

```
 when /^([A-Z].*)::([^:.]*)$/

```

# Constant or class methods
receiver = $1

- message = Regexp.quote($4)

- message = Regexp.quote($2)  
begin  
candidates = eval(“#{receiver}.constants.collect{|m| m.to\_s}”,  
bind)  
candidates |= eval(“#{receiver}.methods.collect{|m| m.to\_s}”, bind)  
@@ -134,7 +134,7 @@ module IRB  
when /^([^."]._).([^.]_)$/
# variable
receiver = $1

- message = Regexp.quote($3)

- message = Regexp.quote($2)

---

<div class="post-metadata">

**Author:** ![Kazuhiro\_NISHIYAMA](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/k/77aa72/32.png) [@Kazuhiro\_NISHIYAMA](https://www.ruby-forum.com/u/Kazuhiro_NISHIYAMA)\
**Post date:** [April 13, 2010, 7:03am UTC](https://www.ruby-forum.com/t/bug-3126-irb-completion-b-g-btypeerror/186675/2 "2010-04-13T07:03:16Z")

</div>

e$B$1$$$8$e!w$$$7$D$+$G$9e(B.

In the message: “[Bug #3126] irb/completione$B$Ge(BTypeError”, on Apr/11  
11:34(JST)  
Kazuhiro NISHIYAMA writes:

> Bug #3126: irb/completione$B$Ge(BTypeError  
> [http://redmine.ruby-lang.org/issues/show/3126](http://redmine.ruby-lang.org/issues/show/3126)

> irb/completion e$B$rFI$\_9~$s$G$$$k$H!Ve(Ba.e$B!W$d!Ve(BC::e$B!W$J$I$N8e$K%?%V%-!\<$r2!$9$He(B  
> …/irb/completion.rb:137:in `quote': can't convert NilClass to String (TypeError) e$B$de(B .../irb/completion.rb:87:in `quote’: can’t convert NilClass to String (TypeError)  
> e$B$G=\*N;$7$F$7$^$$$^$9!#e(B

e$B?=$7Lu$J$$e(B. e$B%3%\_%C%H$7$^$7$?e(B.

\_\_  
----------------------------------------------------\>\> e$B@PDMe(B  
e$B7=\<ye(B \<\<—  
----------------------------------\>\> e-mail: removed\_email\_address@domain.invalid \<\<—

---

<div class="post-metadata">

**Author:** ![Kazuhiro\_NISHIYAMA](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/k/77aa72/32.png) [@Kazuhiro\_NISHIYAMA](https://www.ruby-forum.com/u/Kazuhiro_NISHIYAMA)\
**Post date:** [April 13, 2010, 7:07am UTC](https://www.ruby-forum.com/t/bug-3126-irb-completion-b-g-btypeerror/186675/3 "2010-04-13T07:07:22Z")

</div>

e$B%A%1%C%He(B #3126 e$B$,99?7$5$l$^$7$?!#e(B (by Keiju Ishitsuka)

e$B%9%F!\<%?%9e(B Opene$B$+$ie(BClosede$B$KJQ99e(B  
e$B?JD=e(B % 0e$B$+$ie(B100e$B$KJQ99e(B

This issue was solved with changeset r27327.  
Kazuhiro, thank you for reporting this issue.  
Your contribution to Ruby is greatly appreciated.  
May Ruby be with you.

* * *

[http://redmine.ruby-lang.org/issues/show/3126](http://redmine.ruby-lang.org/issues/show/3126)