Re: regular expression for nested parentheses

2007-12-09 Thread John Machin
On Dec 10, 12:22 pm, MRAB <[EMAIL PROTECTED]> wrote: > On Dec 9, 10:12 pm, John Machin <[EMAIL PROTECTED]> wrote: > > > > > > > On Dec 10, 8:53 am, Noah Hoffman <[EMAIL PROTECTED]> wrote: > > > > On Dec 9, 1:41 pm, John Machin <[EMAIL PROTECTED]> wrote: > > > > > A pattern that can validly be descr

Re: regular expression for nested parentheses

2007-12-09 Thread MRAB
On Dec 9, 10:12 pm, John Machin <[EMAIL PROTECTED]> wrote: > On Dec 10, 8:53 am, Noah Hoffman <[EMAIL PROTECTED]> wrote: > > > > > On Dec 9, 1:41 pm, John Machin <[EMAIL PROTECTED]> wrote: > > > > A pattern that can validly be described as a "regular expression" > > > cannot count and thus can't ma

Re: regular expression for nested parentheses

2007-12-09 Thread John Machin
On Dec 10, 8:53 am, Noah Hoffman <[EMAIL PROTECTED]> wrote: > On Dec 9, 1:41 pm, John Machin <[EMAIL PROTECTED]> wrote: > > > A pattern that can validly be described as a "regular expression" > > cannot count and thus can't match balanced parentheses. Some "RE" > > engines provide a method of taggi

Re: regular expression for nested parentheses

2007-12-09 Thread Noah Hoffman
On Dec 9, 1:41 pm, John Machin <[EMAIL PROTECTED]> wrote: > A pattern that can validly be described as a "regular expression" > cannot count and thus can't match balanced parentheses. Some "RE" > engines provide a method of tagging a sub-pattern so that a match must > include balanced () (or [] or

Re: regular expression for nested parentheses

2007-12-09 Thread John Machin
On Dec 10, 8:13 am, Noah Hoffman <[EMAIL PROTECTED]> wrote: > I have been trying to write a regular expression that identifies a > block of text enclosed by (potentially nested) parentheses. I've found > solutions using other regular expression engines (for example, my text > editor, BBEdit, which

regular expression for nested parentheses

2007-12-09 Thread Noah Hoffman
I have been trying to write a regular expression that identifies a block of text enclosed by (potentially nested) parentheses. I've found solutions using other regular expression engines (for example, my text editor, BBEdit, which uses the PCRE library), but have not been able to replicate it using