# Trap() with String command dosn't work(1.8/1.9)

**URL:** <https://www.ruby-forum.com/t/trap-with-string-command-dosnt-work-1-8-1-9/105064>\
**Category:** Development\
**Created:** [May 25, 2007, 1:00pm UTC](https://www.ruby-forum.com/t/trap-with-string-command-dosnt-work-1-8-1-9/105064 "2007-05-25T13:00:25Z")\
**Posts on this page:** 2\
**Page:** 1

<div class="post-metadata">

**Author:** ![Chikanaga\_Tomoyuki](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/c/ea5d25/32.png) [@Chikanaga\_Tomoyuki](https://www.ruby-forum.com/u/Chikanaga_Tomoyuki)\
**Post date:** [May 25, 2007, 1:00pm UTC](https://www.ruby-forum.com/t/trap-with-string-command-dosnt-work-1-8-1-9/105064/1 "2007-05-25T13:00:25Z")

</div>

e$BF|K%3%s%H%m!\<%k%7%9%F%`e(B(e$B3te(B)e$B$N6a1J$H?=$7$^$9!#e(B

e$B%_%s%i%$%s%^%K%e%"%k$NNc$K$h$k$He(B Kernel#trap e$B$_$h$Se(B  
Signal.trap e$B$Oe(B  
e$B%O%s%I%i$KJ8;zNse(B(e$B%9%/%j%W%HJRe(B)e$B$r;XDj$G$-$k$H$J$C$F$$$^$9$,!"e(B  
e$B$d$C$F$\_$k$H$&$^$/F0$$$F$$$J$$$h$&$G$9!#e(B

# 

e$B%^%K%e%"%kK\J8e(B(e$B!)e(B)e$B$K$O!"%9%/%j%W%HJR$rJ8;zNs$H$7$FEO$7$F$$$$$He(B

# e$B$O$C$-$j$H$O=q$$$F$J$$$h$&$G$9$1$l$Ie(B…

1.8 e$B$He(B 1.9 e$B$G$=$l$\>$l0[$J$k%(%i!\<FbMF$K$J$j$^$9!#e(B  
e$B$J$\*!"$$$m$$$m$J4D6-$G;n$7$?$N$G$9$,e(B 1.8.0 e$B$G$OF0$$$F$$$F!"e(B  
1.8.1 e$B$+$iF0$+$J$/$J$C$?$h$&$G$9!#e(B

$ cat traptest.rb  
Signal.trap(:INT, “p true”)  
loop do  
sleep  
end

$ ruby-1.8.6 -v traptest.rb  
ruby 1.8.6 (2007-03-13 patchlevel 0) [i686-linux]  
true # \<= Ctrl-C  
traptest.rb:4: unexpected return

$ ~/env/ruby-head/bin/ruby -v traptest.rb  
ruby 1.9.0 (2007-01-09 patchlevel 0) [i686-linux]

# \<- Ctrl-C

traptest.rb:4:in `sleep': wrong argument type String (expected Data) (TypeError) from traptest.rb:4:in`block in ’  
from traptest.rb:3:in `loop' from traptest.rb:3:in`’

$ ruby1.8 -v hoge.rb  
ruby 1.8.0 (2003-08-10) [i386-linux]  
true # \<= Ctrl-C  
true # \<= Ctrl-C

e$B0J\>e!"Js9p$@$1$G$9$\_$^$;$s!#e(B

---

<div class="post-metadata">

**Author:** ![Chikanaga\_Tomoyuki](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/c/ea5d25/32.png) [@Chikanaga\_Tomoyuki](https://www.ruby-forum.com/u/Chikanaga_Tomoyuki)\
**Post date:** [May 28, 2007, 8:39am UTC](https://www.ruby-forum.com/t/trap-with-string-command-dosnt-work-1-8-1-9/105064/2 "2007-05-28T08:39:35Z")

</div>

e$B$J$+$@$G$9!#e(B

At Fri, 25 May 2007 19:59:48 +0900,  
Chikanaga Tomoyuki wrote in [ruby-dev:30820]:

> e$B%_%s%i%$%s%^%K%e%"%k$NNc$K$h$k$He(B Kernel#trap e$B$_$h$Se(B Signal.trap e$B$Oe(B  
> e$B%O%s%I%i$KJ8;zNse(B(e$B%9%/%j%W%HJRe(B)e$B$r;XDj$G$-$k$H$J$C$F$$$^$9$,!"e(B  
> e$B$d$C$F$\_$k$H$&$^$/F0$$$F$$$J$$$h$&$G$9!#e(B
> 
> # e$B%^%K%e%"%kK\J8e(B(e$B!)e(B)e$B$K$O!"%9%/%j%W%HJR$rJ8;zNs$H$7$FEO$7$F$$$$$He(B
> 
> # e$B$O$C$-$j$H$O=q$$$F$J$$$h$&$G$9$1$l$Ie(B…
> 
> 1.8 e$B$He(B 1.9 e$B$G$=$l$\>$l0[$J$k%(%i!\<FbMF$K$J$j$^$9!#e(B

1.9e$B$G$OJ8;zNs$Oe(B"DEFAULT",“IGNORE”,"EXIT"e$B$J$I0J30$OIT2D$K$J$j$^e(B  
e$B$7$?!#e(B

# e$B8\_49@-$NOC$+$H4\*0c$$$7$F$^$7$?!#e(B

> $ ruby-1.8.6 -v traptest.rb  
> ruby 1.8.6 (2007-03-13 patchlevel 0) [i686-linux]  
> true # \<= Ctrl-C  
> traptest.rb:4: unexpected return

e$B$3$A$i$G$Oe(Btruee$B$,2L$F$7$J$/=PB3$1$^$7$?!#e(B

# Index: eval.c

— eval.c (revision 12396)  
+++ eval.c (working copy)  
@@ -1866,5 +1866,5 @@ rb\_eval\_cmd(cmd, arg, level)  
POP\_FRAME();

- jump\_tag\_but\_local\_jump(state, val);

- if (state) jump\_tag\_but\_local\_jump(state, val);  
return val;  
}