indexing source code

i've been trying to find a way to index several online
books i have from o'reilly. Because most of thse
contain a large amount of example code depending on
what the book is about , htdig seems to miss , or not
index , the bulk of the text in the files.

i would like to be able to do a search for
perl file open
and find references to the syntax of the open command
in "perl in a nutshell" unfortunaly because the syntax
looks like
open (IN,"filename");
( or worse open (IN,$filesname); )
i belive htdig is ignoring it ( i'm not even going to
start to think of the problems with the 12 or so books
i have on java ) although the words open and file are
their and i belive the title of the doc is perl in a
nutshell on the html page pg134.html in that docs dir
, the search never seems to bring up that doc , or any
other doc having to to with any of the perl books ( i
have about 5 ).

is this not somthing i will be able to do with htdig?
keep in mind that re-building my db takes a good 6
hours , so testing multiple configurations could take
quite some time. Although i will say htdig does do a
good job of indexing most of the other text in my docs
, i mainly need a referance when i'm looking up a
syntax for somthing.

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