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/*
* Ensure that flat matches with metachars in them don't have their metachars
* interpreted as special.
*/
function isPatternSyntaxError(pattern) {
try {
new RegExp(pattern);
return false;
} catch (e if e instanceof SyntaxError) {
return true;
}
}
// Bug example.
assertEq("1+2".replace("1+2", "$&+3"), "1+2+3");
assertEq("1112".replace("1+2", ""), "1112");
// ^
assertEq("leading text^my hat".replace("^my hat", ""), "leading text");
assertEq("my hat".replace("^my hat", ""), "my hat");
// $
assertEq("leading text$my money".replace("leading text$", ""), "my money");
assertEq("leading text".replace("leading text$", ""), "leading text");
// \
var BSL = '\\';
assertEq(("dir C:" + BSL + "Windoze").replace("C:" + BSL, ""),
"dir Windoze");
assertEq(isPatternSyntaxError("C:" + BSL), true);
// .
assertEq("This is a sentence. It has words.".replace(".", "!"),
"This is a sentence! It has words.");
assertEq("This is an unterminated sentence".replace(".", ""),
"This is an unterminated sentence");
// *
assertEq("Video killed the radio *".replace(" *", ""), "Video killed the radio");
assertEq("aaa".replace("a*", ""), "aaa");
// +
assertEq("On the + side".replace(" +", ""), "On the side");
assertEq("1111111111111".replace("1+", ""), "1111111111111");
// \+
assertEq(("Inverse cone head: " + BSL + "++/").replace(BSL + "+", ""),
"Inverse cone head: +/");
assertEq((BSL + BSL + BSL).replace(BSL + "+", ""),
BSL + BSL + BSL);
// \\+
assertEq((BSL + BSL + "+").replace(BSL + BSL + "+", ""), "");
assertEq((BSL + BSL + BSL).replace(BSL + BSL + "+", ""), (BSL + BSL + BSL));
// \\\
assertEq((BSL + BSL + BSL + BSL).replace(BSL + BSL + BSL, ""), BSL);
assertEq(isPatternSyntaxError(BSL + BSL + BSL), true);
// \\\\
assertEq((BSL + BSL + BSL + BSL).replace(BSL + BSL + BSL + BSL, "", "i"), "");
assertEq((BSL + BSL).replace(BSL + BSL + BSL + BSL, ""), BSL + BSL);
// ?
assertEq("Pressing question?".replace("?", "."), "Pressing question.");
assertEq("a".replace("a?", ""), "a");
// (
assertEq("(a".replace("(", ""), "a");
// )
assertEq("a)".replace(")", ""), "a");
// ( and )
assertEq("(foo)".replace("(foo)", ""), "");
assertEq("a".replace("(a)", ""), "a");
// [
assertEq("[a".replace("[", ""), "a");
// ]
assertEq("a]".replace("]", ""), "a");
// [ and ]
assertEq("a".replace("[a-z]", ""), "a");
assertEq("You would write your regexp as [a-z]".replace("[a-z]", ""),
"You would write your regexp as ");
// {
assertEq("Numbers may be specified in the interval {1,100}".replace("{1,", ""),
"Numbers may be specified in the interval 100}");
// }
assertEq("Numbers may be specified in the interval {1,100}".replace(",100}", ""),
"Numbers may be specified in the interval {1");
// { and }
assertEq("Numbers may be specified in the interval {1,100}".replace(" {1,100}", ""),
"Numbers may be specified in the interval");
assertEq("aaa".replace("a{1,10}", ""), "aaa");
// |
assertEq("Mr. Gorbachev|Tear down this wall!".replace("|Tear down this wall!", ""),
"Mr. Gorbachev");
assertEq("foobar".replace("foo|bar", ""), "foobar");
print("PASS");
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