Hello,

I want to add my 2 cents to the topic...

** Nicholas Marriott 2011-06-28 07:07
  on topic "tmux has-session -t MYSESSION 2> /dev/null" said

> This is a bug in epoll on Linux, you have several choices:

> - Build tmux against libevent 2 and set EVENT_NOEPOLL=1 in the
>   environment before starting it. (libevent 1.4 has a another bug which
>   is worse, so only do this if you use libevent 2.)

> - Avoid redirecting to /dev/null. IIRC you can workaround it with
>   for example tmux info|cat >/dev/null.

I report following:

1) system: Archlinux x86_64,
  gcc: 4.6.1,
  kernel (uname -s -r -v):
    Linux 2.6.39.1-zen-ARCH-00324-g6d6d304 #1 ZEN SMP PREEMPT Wed Jun 15 
14:45:20 IRKST 2011
  tmux: compiled from svn (revno. 2588)
  libevent: 2.0.12 and 2.0.13 (tried on two hosts)

2) several sessions: 'tools', 'editors', 'vcs' on socket 'docs': tmux -2 -u -L 
docs

3) in terminal
  $ tmux -2 -u -L docs has-session -t tools
  $
  $ tmux -2 -u -L docs has-session -t tool
  $
  $ tmux -2 -u -L docs has-session -t tooll
  session not found: tooll
  $ tmux -2 -u -L docs has-session -t tools 2> /dev/null
  $
  $ tmux -2 -u -L docs has-session -t tooll 2> /dev/null

  ... hanging, have to kill terminal and start new one
  $ export EVENT_NOEPOLL=1
  $ tmux -2 -u -L docs has-session -t tools
  $
  $ tmux -2 -u -L docs has-session -t tooll
  session not found: tooll
  $ tmux -2 -u -L docs has-session -t tools 2> /dev/null
  $ tmux -2 -u -L docs has-session -t tooll 2> /dev/null

  ... hanging

So, if I'm right, only second solution is working and libevent2
[completely] broken in that respect.

P.S. Why 'has-session -t tool' works? Is `target-session' (from man page) a
pattern and the exact name?

---
WBR, Vladimir Lomov.

-- 
I stayed up all night playing poker with tarot cards.  I got a full
house and four people died.
                -- Steven Wright

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