Getting a substring of an attribute in XPATH

That's actually not so bad, but IIRC substring doesn't like negative indices. I tried

substring(/foo/bar/@baz, string-length(/foo/bar/@baz)-4)

Which gave me the expected result.

try this: substring-before(/foo/bar/@baz,"rld!")

Use:

substring(/foo/bar/@baz, string-length(/foo/bar/@baz)-3)

Do note the 3 in the expression.

The following is wrong:

substring(/foo/bar/@baz, string-length(/foo/bar/@baz)-4)

because this returns the last 5 characters of the string value of the baz attribute.

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