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tramp (2.1.19): Problem with tramp_vc_registered_read_file_names

From: David Rothenberger
Subject: tramp (2.1.19): Problem with tramp_vc_registered_read_file_names
Date: Mon, 18 Oct 2010 16:05:07 -0700
User-agent: Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv: Gecko/20100915 Thunderbird/3.1.4

I'm hitting a problem with tramp 2.1.19 that I wasn't seeing with
2.1.18. First, I should mention that I'm using XEmacs 21.4.22 under
Cygwin (yes, I know).

When I connect to slower machines (e.g., other Cygwin machines),
tramp-handle-vc-registered fails with the error "Couldn't find exit
status of vc_registered_read_file_names".

tramp sends a command like this to the remote machine:

    tramp_vc_registered_read_file_names <<'EOF'
     2>/dev/null; echo tramp_exit_status $?

This is actually two commands due to the here document, so PS1
occurs twice: once after the output of
tramp_vc_registered_read_file_names and once after the "echo
tramp_exit_status" stuff. Unfortunately, tramp-wait-for-output
sometimes returns after seeing the first PS1, which seems to confuse

At least, I *think* that's what's going on. Sometimes repeatedly
trying to open the remote file will cause the error to go away. I
see this mostly on slower remote machines, but occasionally on fast
local Linux machines, too.

David Rothenberger  ----  address@hidden

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