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| − | The string API is a default Lua 5.1 API as defined [http://www.lua.org/manual/5.1/manual.html#5.4 here]. Please list any non-working functions below.
| + | Yours is a clever way of tihinkng about it. |
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| − | ==Non-Working Functions==
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| − | ===string.gmatch(string, pattern)===
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| − | Using any quantifier other than + will cause it to hang if that quantifier applies to the whole pattern and that pattern does not match the whole string.
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| − | Examples:
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| − | <pre>
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| − | "abcdef":gmatch("%a*") -- Works
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| − | "abc=def":gmatch("%a*") -- Hang
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| − | "abc=def":gmatch("%a.*") -- Works
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| − | "abc=def":gmatch("[%a.]*") -- Hang
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| − | "abc=def":gmatch("[^=]*") -- Hang
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| − | "abc=def":gmatch("([^=]*)=?") -- Works (Note: This produces the same result as the above pattern should)
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| − | "abcdef":gmatch("[^=]*") -- Works
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| − | "abc=def":gmatch("[^=]*=") -- Works
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| − | </pre>
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| − | ===string.sub / string.find ===
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| − | Both string.sub and string.find work on their own, but calling string.find on a string returned by string.sub will return the index of the character in the original string, not the sub string you are referencing.
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| − | Example:
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| − | <pre>
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| − | local testString = "This is a sample string";
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| − | local testSubString = string.sub(testString,5);
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| − | local indexOfSample = string.find(testSubString,"sample");
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| − | </pre>
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| − | indexOfSample is returned 11 instead of the expected 7
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| − | Concatenating a blank string onto the end of the string causes new memory to be allocated and works properly again
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| − | <pre>
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| − | local testString = "This is a sample string";
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| − | local testSubString = string.sub(testString,5);
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| − | local indexOfSample = string.find(testSubString.."","sample");
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| − | </pre>
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| − | This is also a problem with using string.find on command line arguments, as this returns the index in the full command path instead of the specific argument.
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| − | [[Category:APIs]]
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