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shell-expand-line working strangely without shebangs
From: |
Jae Juang |
Subject: |
shell-expand-line working strangely without shebangs |
Date: |
Mon, 05 Aug 2024 16:57:11 +0800 |
Configuration Information [Automatically generated, do not change]:
Machine: aarch64
OS: linux-gnu
Compiler: gcc
Compilation CFLAGS: -g -O2
uname output: Linux nixos 6.1.77 #1-NixOS SMP Mon Feb 5 20:13:03 UTC 2024
aarch64 GNU/Linux
Machine Type: aarch64-unknown-linux-gnu
Bash Version: 5.2
Patch Level: 15
Release Status: release
Description:
In bash, the very useful shell-expand-line (`M-C-e`) expands command
substitutions to their contents, on the current line. However, this works very
strangely for commands without shebangs. Symptoms further described in
"Repeat-By" section.
Replicated on kitty and mac Terminal on NixOS and macOS with 5.2.15(1)-release
(built by Nix). Replicated on kitty and mac Terminal on macOS with
5.2.32(1)-release (built from source).
Does NOT replicate on kitty and mac Terminal on macOS with 3.2.57(1)-release
(provided by macOS 14.4.1 (23E224)` (Sonoma)).
Previously posted on
https://unix.stackexchange.com/questions/781355/shell-expand-line-and-shebangs
Repeat-By:
1. Create a simple executable file with and without shebang.
echo echo hi >> test-no-shebang
chmod +x test-no-shebang
echo '#!/bin/sh' >> test-shebang
echo echo hi >> test-shebang
chmod +x test-shebang
2. Enter $(./test-shebang), then M-C-e. This works as expected, expanding the
line to "hi". C-_ works normally, undoing the expansion.
3. Enter $(./test-no-shebang), then M-C-e. This works strangely, indeed
expanding the line to "hi", but removing the prompt in front of the line. C-_
does not work, printing the character literally instead, and nor do most
bindings, but C-u kind of works, successfully clearing the line (but not
clearing the "hi").
- shell-expand-line working strangely without shebangs,
Jae Juang <=