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5. The construct (?&) was not diagnosed as a syntax error (it referenced the |
5. The construct (?&) was not diagnosed as a syntax error (it referenced the |
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first named subpattern) and a construct such as (?&a) would reference the |
first named subpattern) and a construct such as (?&a) would reference the |
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first named subpattern whose name started with "a" (in other words, the |
first named subpattern whose name started with "a" (in other words, the |
| 24 |
length check was missing). |
length check was missing). Both these problems are fixed. "Subpattern name |
| 25 |
|
expected" is now given for (?&) (a zero-length name), and this patch also |
| 26 |
|
makes it give the same error for \k'' (previously it complained that that |
| 27 |
|
was a reference to a non-existent subpattern). |
| 28 |
|
|
| 29 |
6. The erroneous patterns (?+-a) and (?-+a) give different error messages; |
6. The erroneous patterns (?+-a) and (?-+a) give different error messages; |
| 30 |
this is right because (?- can be followed by option settings as well as by |
this is right because (?- can be followed by option settings as well as by |