Bug #12669
Updated by nobu (Nobuyoshi Nakada) over 7 years ago
Related to #12402, I found other kind inconsistencies.
simple assignment and op assign of `command` cause syntax error,
while simple assignments don't.
```
$ ruby -ce 'a = b = raise "x"'
Syntax OK
```
```
$ ruby -ce 'a = b += raise "x"'
-e:1: syntax error, unexpected tSTRING_BEG, expecting keyword_do or '{' or '('
a = b += raise "x"
^
```
```
$ ruby -ce 'a += b = raise "x"'
-e:1: syntax error, unexpected tSTRING_BEG, expecting keyword_do or '{' or '('
a += b = raise "x"
^
```
```
$ ruby -ce 'a += b += raise "x"'
-e:1: syntax error, unexpected tSTRING_BEG, expecting keyword_do or '{' or '('
a += b += raise "x"
^
```
https://github.com/ruby/ruby/compare/trunk...nobu:chained-rhs https://github.com/ruby/ruby/compare/trunk...nobu:rhs-command