diff options
Diffstat (limited to 'src/backend/parser/scan.l')
| -rw-r--r-- | src/backend/parser/scan.l | 27 |
1 files changed, 20 insertions, 7 deletions
diff --git a/src/backend/parser/scan.l b/src/backend/parser/scan.l index 0cd782827ac..96f51bfd596 100644 --- a/src/backend/parser/scan.l +++ b/src/backend/parser/scan.l @@ -885,20 +885,33 @@ other . * to forbid operator names like '?-' that could not be * sequences of SQL operators. */ - while (nchars > 1 && - (yytext[nchars - 1] == '+' || - yytext[nchars - 1] == '-')) + if (nchars > 1 && + (yytext[nchars - 1] == '+' || + yytext[nchars - 1] == '-')) { int ic; for (ic = nchars - 2; ic >= 0; ic--) { - if (strchr("~!@#^&|`?%", yytext[ic])) + char c = yytext[ic]; + if (c == '~' || c == '!' || c == '@' || + c == '#' || c == '^' || c == '&' || + c == '|' || c == '`' || c == '?' || + c == '%') break; } - if (ic >= 0) - break; /* found a char that makes it OK */ - nchars--; /* else remove the +/-, and check again */ + if (ic < 0) + { + /* + * didn't find a qualifying character, so remove + * all trailing [+-] + */ + do { + nchars--; + } while (nchars > 1 && + (yytext[nchars - 1] == '+' || + yytext[nchars - 1] == '-')); + } } SET_YYLLOC(); |