regex alternative draft 0.1

<img src='blah' alt='foo' />

// extracting content of 'src' from one html image element
string '<img' not string '/>' string 'src=' extract quoted '\'','"' '\\' not string '<img' string '/>'

- string '<img' - string to look for
- not string '/>' - discard if this string was found before...
	- string 'src=' - string to look for
- extract - add to output array
	- quoted '\'','"' '\\' - match a quote (arg1 - quoting strings, arg2 - escaping string)
- not string 'img' - discard if this string was found before...
	- string '/>' - string to look for

grammar

string-literal-list: <string-literal> [ ',' <string-literal> ] x 0+
string-check: 'string' <string-literal>        // get position of string, fail if not found
not-check: 'not' <function> <function>         // get position of both functions, fail if 1 before 2
quoted-check: 'quoted' <string-literal-list> <string-literal-list>     // get position of quoted string, fail if not found
extract-op: 'extract' <function>               // mark range for extraction
match: <string-check> | <not-check> | <quoted-check> | <extract-op>
match-list <match> [ <match> ] x 0+
program: <match-list>