From: cheshire (he...@cheryllium.com) To: mailto:bug-bash@gnu.org
Subject: Interactive commands cant be backgrounded if run from bashrc Configuration Information [Automatically generated, do not change]: Machine: x86_64 OS: linux-gnu Compiler: gcc Compilation CFLAGS: -g -O2 -fdebug-prefix-map=/build/bash-a6qmCk/bash-5.0=. -fstack-protector-strong -Wformat -Werror=format-security -Wall -Wno-parentheses -Wno-format-security uname output: Linux cyang_2021 4.4.0-19041-Microsoft #1151-Microsoft Thu Jul 22 21:05:00 PST 2021 x86_64 x86_64 x86_64 GNU/Linux Machine Type: x86_64-pc-linux-gnu Bash Version: 5.0 Patch Level: 17 Release Status: release Description: Whenever I start my session, I'd like to automatically open emacs to a specific file. So, I added the emacs command to the bottom of my ~/.bashrc file. This opens emacs correctly when I start the session. Normally, when I start emacs, I can background the process with CTRL+Z, and foreground with `fg` command. When emacs is started from .bashrc as above, pressing CTRL+Z does not correctly background the process. Instead, the terminal session goes blank and becomes unresponsive. This may be because the bashrc file is still running, and bash itself perhaps does not finish initializing until everything in the bashrc completes. This may be why CTRL+Z does not work correctly (it might require bash to finish initializing first) While trying to find a workaround, we tried to start the process in background, and then foreground it, within the bashrc. So instead of `emacs test.txt`, we tried: emacs test.txt & fg The first line, instead of backgrounding emacs, appeared to run it simultaneously with bash. This had the consequence that both bash and emacs were taking the same keyboard input and trying to render to the same screen. The second line crashes with the error: bash: fg: no job control (Probably doesn't need to be said, but these commands work if taken out of the bashrc, and run manually in the shell after bash is allowed to finish initialization.) Repeat-By: 1. Add the following line to bottom of your bash init file: emacs test.txt # doesn't matter 2. Start a new session (let it open emacs too) 3. Press CTRL+Z
