Like i said in eggdrops 1.6.x we can define nick-len

My bot is having trouble with nicknames longer than 9 characters. How do I fix this?
With Eggdrop 1.6, the nick length allowed on your network type will be set automatically provided net-type is set correctly in the bot's config file. You can adjust the nick length manually using the nick-len setting in the config.

Eggdrop 1.4 and earlier, by default, only allow nicknames to be 9 characters long. If you want to use it on networks with long nicknames (e.g. DALnet), you need to change a setting defined in eggdrop.h before compiling the bot. To do this, FTP to the shell, download src/eggdrop.h, then open the file in a text editor. Find the NICKMAX setting and change it to the maximum number of characters allowed by your IRC network, then save the file and upload it (overwriting the existing eggdrop.h). Of course, you can edit the file directly on the shell if you prefer to do so instead of downloading, editing locally, then uploading it.

Even if you change the nick-len or NICKMAX setting, user handles will still be limited to 9 characters. To increase the handle length above 9 characters in Eggdrop 1.6 or Eggdrop 1.4 and earlier, you need to change the HANDLEN setting in src/eggdrop.h before compiling. Note that your bot will only be able to link with bots compiled with the same HANDLEN setting. Since most bots are compiled with the default of 9, this should be taken into consideration before you change it.