From 57d1a9f0e21d1e9c9ac558e4e3040b678e6d382f Mon Sep 17 00:00:00 2001
From: cubernetes <timo42@proton.me>
Date: Sat, 17 Oct 2026 01:22:07 +0200
Subject: [PATCH] Improve bash/tmuxb aliases

---
 bashrc-forward.sh | 21 ++++++++-------------
 1 file changed, 8 insertions(+), 13 deletions(-)

diff --git a/bashrc-forward.sh b/bashrc-forward.sh
index 3e2161d..d9d995f 100644
--- a/bashrc-forward.sh
+++ b/bashrc-forward.sh
@@ -72,25 +72,20 @@ bashrc_forward () {
               set +o posix
               #-# In case `$0` is checked by other scripts
               BASH_ARGV0=bash
+
               #-# The following host-side command substitution MUST be single line if this file where the bashrc_forward function is defined
               #-# is part of the host-side .bashrc. Otherwise the self-inclusion trick with the `set -v; cat ~/.bashrc; set +v` WILL NOT work,
               #-# either because of a bug in bash or because of a quirk I do not understand. For some reason, if it is multiline, only the line
               #-# where the command substition starts is printed. If there is a trailing backslash, then also the second line is printed. But in
               #-# no circumstance will the last line be printed, no matter what amount of trailing backslashes you add.
               '"$(bashrc_load)"'
-              #-# Not universal, but good enough to bash is preferrably invoked as sh so our constructed ENV is loaded.
-              alias bashb="bash -c '\''\'\'''\''\'\''\'\'''\'''\''\'\'''\''exec -a sh bash \"\$@\"'\''\'\'''\''\'\''\'\'''\'''\''\'\'''\'' _"
-              #-# instead of the sudobash alias, you can also just do `sudo bbrc`. Keeping the `sudobash` alias anyway as an alternative.
-              #-# Warning: Be careful! sudobash will run YOUR .bashrc with ROOT on the remote system! You may or may not want this!
-              alias sudobash="ENV_RAW=\$(<\"\$ENV\") sudo --preserve-env=ENV_RAW bash --norc --noprofile -ic '\''\'\'''\''\'\''\'\'''\'''\''\'\'''\''
-                . <(printf %s \"\$ENV_RAW\")
-                unset -v ENV_RAW
-                builtin eval \"\$PROMPT_COMMAND\"
-                builtin exec -a sh bash \"\$@\"
-              '\''\'\'''\''\'\''\'\'''\'''\''\'\'''\'' _"
-              #-# For tmux, it is more complicated. Here, the `ENV_RAW` workaround is actually required, because TMUX restricts the total argument lenght to around 16384 characters, often to little for a complex `.bashrc`
-              #-# If you need a login shell, add a `-l` to the last `bash` invocation
-              alias tmuxb="ENV_RAW=\$(<\"\$ENV\") tmux -2 new-session '\''\'\'''\''\'\''\'\'''\'''\''\'\'''\''bash --norc --noprofile -ic '\''\'\'''\''\'\''\'\'''\'''\''\'\'''\''\'\''\'\'''\''\'\''\'\'''\'''\''\'\'''\'''\''\'\'''\''\'\''\'\'''\'''\''\'\'''\''. <(printf %s \"\$ENV_RAW\"); unset -v ENV_RAW; builtin eval \"\$PROMPT_COMMAND\"; builtin exec -a sh bash'\''\'\'''\''\'\''\'\'''\'''\''\'\'''\''\'\''\'\'''\''\'\''\'\'''\'''\''\'\'''\'''\''\'\'''\''\'\''\'\'''\'''\''\'\'''\'' '\''\'\'''\''\'\''\'\'''\'''\''\'\'''\''"
+
+              alias bash="-(exec -a sh bash {CURSOR})"
+              #-# tmux has a tight (16384) argument length limit. To bypass that limit, we pass the serialized `.bashrc`
+
+              #-# via an environment variable and deserialize it using eval. Unfortunately, it does not work perfectly.
+              alias tmuxb="FORWARDED_BASHRC=\$(bashrc_forward) tmux -2 new-session '\''\'\'''\''\'\''\'\'''\'''\''\'\'''\''eval \"\$FORWARDED_BASHRC\"'\''\'\'''\''\'\''\'\'''\'''\''\'\'''\''"
+
               #-# Using PROMPT_COMMAND instead of DEBUG trap because of speed tradeoffs (DEBUG trap runs way too often)
               #-# Also explicitly removing the export flag as to not append needlessly, in case the remote system exported it accidentally.
               declare +x PROMPT_COMMAND=$PROMPT_COMMAND'\''\'\'''\''\'\''\'\'''\'''\''\'\'''\''