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bug#31924: Tramp handler timeout with custom method
From: |
Sheng Yang |
Subject: |
bug#31924: Tramp handler timeout with custom method |
Date: |
Thu, 24 Oct 2019 00:32:49 -0500 |
User-agent: |
Cyrus-JMAP/3.1.7-470-gedfae93-fmstable-20191021v4 |
I am using tramp with a custom method, and the commit b70f885d seems to break it.
The usage is with yadm (
https://yadm.io/), which prepares a bare git repo to host dotfiles. Here is a minimum script to reproduce the problem:
#!/bin/bash
# this file is /tmp/yadm.sh
shell_opts=""
shell_path=""
if [[ "$SHELL" =~ bash$ ]]; then
shell_opts="--norc"
shell_path="\w"
elif [[ "$SHELL" =~ [cz]sh$ ]]; then
shell_opts="-f"
shell_path="%~"
fi
if [[ "$TERM" == "dumb" ]]; then
yadm_prompt=" > "
fi
# echo "Entering yadm repo"
PROMPT="$yadm_prompt" PS1="$yadm_prompt" "$SHELL" $shell_opts
echo "Leaving yadm repo"
# end of yadm.sh
Start emacs with emacs -q, and evaluate the following
(require 'tramp)
(add-to-list 'tramp-methods
'("yadm"
(tramp-login-program "/tmp/yadm.sh")
;; setting the following is crucial
(tramp-login-env
(("SHELL")
("/bin/sh")))
(tramp-remote-shell "/bin/sh")
(tramp-remote-shell-args ("-c"))
(tramp-connection-timeout 10)))
(find-file "/yadm::.")
which will lead to a timeout.
Notes:
1. Note setting tramp-login-env with SHELL as "/bin/sh" is crucial for this method to work
2. My default shell is /usr/bin/zsh
3. The tramp buffer also has the mysterious "[?2004h" in the tramp buffer.
Please see log files with (setq tramp-verbose 10) in attachment.
Sheng Yang(杨圣), PhD student
Computer Science Department
University of Maryland, College Park
tramp.log
Description: Text Data
tramp-yadm.log
Description: Text Data
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