Limits
Warning: These values may be outdated for mIRC v6.32. Updated and confirmed sections are marked with (Updated)
This page explains various limits imposed by mIRC, however this may not be a complete list. The length is measured in bytes (equivalent to ASCII characters, including spaces.)
You can find the original limits page here.
mIRC
| Name | Length | When exceeded | Description |
| Global limits (Updated) | |||
| Line Length Limit (LLL) | 4150 | Truncated or error | To be precise: 4150 for evaluation results, 4151 for command lines (excluding command prefixes.) |
| Variables (local or global) | 4150 | Unset | This limit includes the variable's name. Example: using "%a" as a name uses 3 bytes (2 for the name and 1 for a space.) This means that for every extra character in the variable name, the maximum length of the value is reduced. Note: the /set command further reduces the length limit to 9144 due to the 4 characters used by "set ". (LLL) |
| IRC server specific | |||
| Incoming lines | 601 | Truncated | Excludes CR/LF. |
| Outgoing lines | LLL | Truncated | (Updated) |
| Joined channel names | 255 | Parted immediately | (Updated) Includes channel prefix. |
| Channel keys | 256 | Truncated | (Updated) |
| 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 |
| CTCPs | |||
| Incoming PING argument | 24 | No reply sent | First character must be a digit; leading spaces ignored. |
| Sockets (Updated) | |||
| Socket name | 255 | 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 (Updated) | |||
| Hashtable name | 256 | Truncated | |
| Hashtable size | 10000 | Error | In number of buckets |
| GUI (Updated) | |||
| Editbox | 1024 | Sent | Editbox is cleared afterwards, similar to pressing Enter. |
| Dialogs (Updated) | |||
| Dialog name | 256 | Truncated | |
| Input dialog text field | 1023 | Truncated | |
| Files (Updated) | |||
| Line of text | 4149 | Split | Excluding CR/LF. Applies to all file-related commands/identifiers. |