# \[Feature #1949\] Warn needless escaped characters

**URL:** <https://www.ruby-forum.com/t/feature-1949-warn-needless-escaped-characters/173939>\
**Category:** Development\
**Created:** [August 18, 2009, 3:26pm UTC](https://www.ruby-forum.com/t/feature-1949-warn-needless-escaped-characters/173939 "2009-08-18T15:26:37Z")\
**Posts on this page:** 2\
**Page:** 1

<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:** [August 18, 2009, 3:26pm UTC](https://www.ruby-forum.com/t/feature-1949-warn-needless-escaped-characters/173939/1 "2009-08-18T15:26:37Z")

</div>

Feature #1949: Warn needless escaped characters  
[http://redmine.ruby-lang.org/issues/show/1949](http://redmine.ruby-lang.org/issues/show/1949)

e$B5/I\<\<Te(B: Yui NARUSE  
e$B%9%F!\<%?%9e(B: Assigned, e$BM%@hEYe(B: Normal  
e$BC4Ev\<Te(B: Yui NARUSE, e$B%+%F%4%je(B: core

e$B@55,I=8=Fb$G$NITI,MW$J%(%9%1!\<%W$K7Y9p$r=P$7$^$;$s$+!#e(B

e$BF05!$H$7$F$O!“e(B/\uXXXX/e$B$NHs8\_49@-$NOC$,$”$j$^$9!#e(B

e$B$3$l$O!"e(BRuby  
1.8e$B$K$_$$$F!“ITI,MW$J%(%9%1!\<%W$G$”$C$?e(B/\u/e$B$,!"e(B  
Ruby 1.9e$B$K$_$$$F$Oe(B\uXXXXe$B$H$$$&9=J8$,DI2C$5$l$?$,$?$a$K!"e(B  
e$B%(%i!\<$,=P$?$j0UL#$,JQ$o$C$F$7$^$C$?$j$7$?$H$$$&OC$G$7$?!#e(B

e$B$3$N$h$&$JIT9,$J=PMh;v$O!"e(B/\u/e$B$H=q$$$?$i7Y9p$r=P$9$h$&$K$7$F$$$?$i!"e(B  
e$BL$A3$KKI$0$3$H$,$G$-$?$j!"Ho32$r8:$i$9$3$H$,$G$-$?$+$b$7$l$^$;$s!#e(B

e$B\>-Mh$^$?JL$N%(%9%1!\<%W5-K!$,DI2C$5$l$k;v$O==J,$"$jF@$kOC$@$H;W$$$^$9!#e(B  
e$B$=$N:]$KF1$8IT9,$r7+$jJV$5$J$$$h$&$K!"7Y9p$r=P$9$h$&$K$7$^$;$s$+!#e(B

e$B6qBNE\*$K$O!"J8;z%/%i%930$Ne(B  
g, i, j, k, l, m, o, p, q, y, E, F, H, I, J, K, L, N, O, P, Q, R, T, U,  
V, X, Y  
e$B$H!“J8;z%/%i%9Fb$Ne(B  
g, i, j, k, l, m, o, p, q, y, z, A, B, E, F, G, H, I, J, K, L, N, O, P,  
Q, R, T, U, V, X, Y, Z  
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e$B$J$\*!“8=\>u$G$O7Y9p$,=P$J$$$,!”$9$G$K%(%9%1!\<%W5-K!$H$7$FMQ$$$F$$$k!“e(B  
/\p/e$B$”$?$j$O5DO@$NM\>CO$N$"$k$H$3$m$+$b$7$l$^$;$s!#e(B

---

<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, 2009, 9:07am UTC](https://www.ruby-forum.com/t/feature-1949-warn-needless-escaped-characters/173939/2 "2009-09-10T09:07:27Z")

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e$B%A%1%C%He(B #1949 e$B$,99?7$5$l$^$7$?!#e(B (by Yui NARUSE)

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

## Applied in changeset r24825.

[http://redmine.ruby-lang.org/issues/show/1949](http://redmine.ruby-lang.org/issues/show/1949)