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I'm browsing with erc to some channels which are mainly used by bot request. Therefore the buffer size will scale up very fast. Since It's a read-only buffer I cannot empty it by hand. Is there a way to tell Emacs to empty a buffer if it reaches a specific size?

  • Have a look at my configuration for clearing eshell. Not sure how to clear if it reaches a specific size but it might be a start link – Sparx Oct 9 '16 at 11:13
  • In what way is the buffer read only? Perhaps you can simply turn the read only flag off by using C-x C-q? – Mathias Dahl Oct 9 '16 at 15:18
  • Doesn't work - already tried – xetra11 Oct 9 '16 at 16:18
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I just found erc-truncate-mode. You have to change this variable erc-max-buffer-size

Maximum size in chars of each ERC buffer. Used only when auto-truncation is enabled.

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