====== Various hard-coded size limits ======

mIRC has lots of internal size limits for various types of data; in fact, pretty much anything in mIRC has an upper limit. Sometimes it's helpful to be aware of such limitations; this page tries to summarize a number of them.

This is a work in progress, please add more as you find them!

All limits are in bytes unless stated otherwise.

^ Topic ^ Limit ^ When exceeded.. ^ Notes ^
|  **General**  ||||
| Line length limit (LLL) |  949 | Truncated or error | To be precise: 949 for evaluation results, 950 for command lines (excluding command prefixes) |
|  **IRC servers**  ||||
| Incoming lines |  601 | Truncated | Excluding CR/LF |
| Outgoing lines |  LLL | Truncated | |
| Joined channel names |  90 | Rejected | mIRC parts the channel immediately |
| Channel keys |  90 | Truncated | |
| Addresses |  90 | Truncated | The part of the full address after the "!"; only with JOIN/QUIT messages, addresses from WHO replies are not truncated |
| Nicknames |  50 | Truncated | |
| Server passwords |  50 | Truncated | As associated with server entries |
|  **CTCP**  ||||
| Incoming PING argument |  24 | No reply sent | First character must be a digit; leading spaces ignored |
|  **Sockets**  ||||
| Socket name |  90 | Error | |
| Send buffer |  16384 | Error | mIRC's own buffers, not WinSock's |
| Receive buffer |  4096 | Receipt stalls | mIRC's own buffers, not WinSock's |
| Socket mark |  LLL | - | Not 512 as the helpfile says |
|  **Hashtables**  ||||
| Hashtable name |  90 | Truncated | |
| Hashtable size |  10000 | Error | In number of buckets, see also [[hashtables]] |
|  **GUI**  ||||
| Editbox |  LLL-1 | Sent | Editbox is cleared afterwards, similar to pressing Enter |
|  **Dialogs**  ||||
| Dialog name |  90 | Truncated | |
|  **Files**  ||||
| Line of text |  998 | Split | Excluding CR/LF. Applies to all file-related commands/identifiers |