Hi Bill, If you specify a number of characters to skip, the offset that is returned is relative to that number, not the start of the string. So if you specify 7 characters to skip and the character you are looking for is the 10th character in the string, you will get (10-7) or 3 as the result.
Pete lcSQL Software <http://www.lcsql.com> Home of lcStackBrowser <http://www.lcsql.com/lcstackbrowser.html> and SQLiteAdmin <http://www.lcsql.com/sqliteadmin.html> On Sat, Feb 22, 2014 at 9:49 AM, proth...@earthednet.org < proth...@earthednet.org> wrote: > Folks: > I think there is something weird about "offset". This occurred on version > 6.5 and now on 6.6. > > First off, the documents say: > > "the charsToSkip is a non-negative integer. If you don't specify how many > charsToSkip, the offset function does not skip any items and starts at the > beginning of the stringToSearch." > > Note the use of the word "items". Skipping characters vs skipping "items" > is a different matter. In the revdocs that are online, the definition of > "characters" to skip is correct. > > But, that's not the end of the story. Offset does not appear to be working > correctly anyway. > > If I run the script: > > put "abcdefgabcccablmnopoq" into theChars > put offset("c",theChars) > > I get: 3, which is correct > > If I do: > put "abcdefgabcccablmnopoq" into theChars > put offset("c",theChars,3) > > I get 7. ??? What the heck? It looks like it returns (the number of > characters to the search char) - (# to skip). > > But, if I do: > put "abcdefgabcccablmnopoq" into theChars > put offset("c",theChars,7) > > I get: 3 > > So, something is very wrong with the offset command. I worked around this > in a parsing script by always not skipping any characters, then after I > found the first instance, deleting the characters I wanted to skip before > the next offset invocation. > > Seems like a bug to me. What do you think? Or is it only my system? Or is > the use of the offset function some convoluted logic that's different from > most other implementations of an offset function? What do I know? I'm new > to Livecode. > > Best, > Bill > > > William Prothero > http://es.earthednet.org > > > _______________________________________________ > use-livecode mailing list > use-livecode@lists.runrev.com > Please visit this url to subscribe, unsubscribe and manage your > subscription preferences: > http://lists.runrev.com/mailman/listinfo/use-livecode > _______________________________________________ use-livecode mailing list use-livecode@lists.runrev.com Please visit this url to subscribe, unsubscribe and manage your subscription preferences: http://lists.runrev.com/mailman/listinfo/use-livecode
