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error.c: print default RS

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* error.c (rb_warn_m): print the default RS instead of an empty
  string with a newline.  [Feature #12944]

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@57377 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
This commit is contained in:
nobu 2017-01-20 01:02:37 +00:00
parent 0ec889d7ed
commit 1d4976c0cf
1 changed files with 4 additions and 1 deletions
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error.c
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@ -303,7 +303,10 @@ rb_warn_m(int argc, VALUE *argv, VALUE exc)
VALUE str;
for (i = 0; i < argc; i++) {
str = rb_obj_as_string(argv[i]);
if (RSTRING_LEN(str) == 0 || !rb_str_end_with_asciichar(str, '\n')) {
if (RSTRING_LEN(str) == 0) {
str = rb_default_rs;
}
else if (!rb_str_end_with_asciichar(str, '\n')) {
str = rb_str_cat(rb_str_dup(str), "\n", 1);
}
rb_write_warning_str(str);