# \[Feature #546\] String#gsub $B$H(B Strnig#scan $B$N%V%m%C%/%Q%i%a!\<%?$N0lCW(B

**URL:** <https://www.ruby-forum.com/t/feature-546-string-gsub-b-h-b-strnig-scan-b-n-v-m-c-q-i-a-n0lcw-b/148194>\
**Category:** Development\
**Created:** [September 10, 2008, 10:03am UTC](https://www.ruby-forum.com/t/feature-546-string-gsub-b-h-b-strnig-scan-b-n-v-m-c-q-i-a-n0lcw-b/148194 "2008-09-10T10:03:02Z")\
**Posts on this page:** 4\
**Page:** 1

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**Author:** ![Yui\_NARUSE](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/y/8edcca/32.png) [@Yui\_NARUSE](https://www.ruby-forum.com/u/Yui_NARUSE)\
**Post date:** [September 10, 2008, 10:03am UTC](https://www.ruby-forum.com/t/feature-546-string-gsub-b-h-b-strnig-scan-b-n-v-m-c-q-i-a-n0lcw-b/148194/1 "2008-09-10T10:03:02Z")

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e$B%A%1%C%He(B #546 e$B$,99?7$5$l$^$7$?!#e(B (by Yui NARUSE)

e$B%+%F%4%je(B coree$B$K%;%C%He(B

e$B8!:w$9$k$HI8=`E:IU%i%$%V%i%j$G$b$R$C$+$+$C$F$$$^$9$,!"e(B  
e$B$3$A$i$K$D$$$F$O$9$G$KBP=h:Q$\_$G$9!#e(B

e$B$^$!!“$.$c$C$H$J$k%1!\<%9$G$b!”%V%m%C%/%Q%i%a!\<%?$,e(B String  
e$B$+$ie(B MatchData e$B$K$J$k$@$1$J$N$G!"e(B  
str.gsub(/foo/){|bar| …} e$B$J$i$P!"e(B  
str.gsub(/foo/){|bar| bar=bar.to\_s; …} e$B$J$i$P!“e(B  
e$B$K$7$F$\*$1$P$H$j$”$($:F0$/$h$&$K$J$k$o$1$G$9$,!#e(B

## MatchData e$B$Ne(B method\_missing e$B$K:Y9)$7$F!"e(BStringe$B$N%a%=%C%I$r8F$V$H$+$d$k$N$O!&!&!&e(B e$B$d$a$?$[$&$,$$$$$@$m$&$J$!!#e(B

[http://redmine.ruby-lang.org/issues/show/546](http://redmine.ruby-lang.org/issues/show/546)

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<div class="post-metadata">

**Author:** ![Yui\_NARUSE](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/y/8edcca/32.png) [@Yui\_NARUSE](https://www.ruby-forum.com/u/Yui_NARUSE)\
**Post date:** [September 10, 2008, 5:46pm UTC](https://www.ruby-forum.com/t/feature-546-string-gsub-b-h-b-strnig-scan-b-n-v-m-c-q-i-a-n0lcw-b/148194/2 "2008-09-10T17:46:14Z")

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e$B4d\<\<$G$9!#e(B

e$B$&$(!“e(BMatchDatae$B$K$9$k$s$G$9$+e(B?  
scane$B$H0lCW$5$;$FM\_$7$$$J$!!”$H;W$C$F$k$s$G$9$,!D!D!#e(B

# 

scane$B$be(BMatchDatae$B$K$7$?$i!“E}0l@-$O\<h$l$k$@$m$&$1$I!”$b$C$H7c$7$/!"$.$c$C$H$J$k$h$&$J5$$9$k!#e(B

2008/09/10 15:28 Yui NARUSE [removed\_email\_address@domain.invalid](mailto:removed_email_address@domain.invalid):

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**Author:** ![Yui\_NARUSE](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/y/8edcca/32.png) [@Yui\_NARUSE](https://www.ruby-forum.com/u/Yui_NARUSE)\
**Post date:** [September 24, 2008, 6:02pm UTC](https://www.ruby-forum.com/t/feature-546-string-gsub-b-h-b-strnig-scan-b-n-v-m-c-q-i-a-n0lcw-b/148194/3 "2008-09-24T18:02:47Z")

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e$B4d\<\<$G$9!#e(B

e$B$3$l$N7hDj!"e(B1.9.1e$B$K$O4V$K9g$$$^$;$s$+e(B?

2008/09/11 0:38 IWAMURO Motonori [removed\_email\_address@domain.invalid](mailto:removed_email_address@domain.invalid):

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<div class="post-metadata">

**Author:** ![Yui\_NARUSE](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/y/8edcca/32.png) [@Yui\_NARUSE](https://www.ruby-forum.com/u/Yui_NARUSE)\
**Post date:** [September 24, 2008, 6:25pm UTC](https://www.ruby-forum.com/t/feature-546-string-gsub-b-h-b-strnig-scan-b-n-v-m-c-q-i-a-n0lcw-b/148194/4 "2008-09-24T18:25:44Z")

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e$B$^$D$b$He(B e$B$f$-$R$m$G$9e(B

In message “Re: [ruby-dev:36524] Re: [Feature #546] String#gsub  
e$B$He(B Strnig#scan e$B$N%V%m%C%/%Q%i%a!\<%?$N0lCWe(B”  
on Thu, 25 Sep 2008 01:01:42 +0900, “IWAMURO Motonori”  
[removed\_email\_address@domain.invalid](mailto:removed_email_address@domain.invalid) writes:

|e$B$3$l$N7hDj!"e(B1.9.1e$B$K$O4V$K9g$$$^$;$s$+e(B?

e$B$$$A$\*$&!“e(BYuguie$B$5$s$K$O!V8!F$$9$k$+$iBT$C$F!W$HEA$($F$”$j$^e(B  
e$B$9!#$?$@!“F0$+$J$/$J$k%W%m%0%i%`$,$I$N$/$i$$$”$k$N$+8+@Q$b$le(B  
e$B$J$/$F$M$(!#e(B