bash cannot switch background/foreground for aplay
Hi, Bash Developers, I found that bash cannot switch background/foreground for aplay. To reproduce: 1. run aplay: aplay -Dhw:0,0 -f dat -i -c2 -vvv ./somewave.wav 2. press CTRL + Z to switch to background 3. press fg to switch to foreground. [Failed at this step, seems aplay not in foreground, because output for aplay is not resumed.] Not sure if this is a bug of aplay or bash, could you please to take a look at bash first? Thanks, Chao
Re: bash cannot switch background/foreground for aplay
On 3/6/20 1:57 AM, Chao Song wrote: > Hi, Bash Developers, > > I found that bash cannot switch background/foreground for aplay. > > To reproduce: > > 1. run aplay: aplay -Dhw:0,0 -f dat -i -c2 -vvv ./somewave.wav > > 2. press CTRL + Z to switch to background > > 3. press fg to switch to foreground. [Failed at this step, seems aplay > not in foreground, because output for aplay is not resumed.] This is shaky logic. > > Not sure if this is a bug of aplay or bash, could you please to take a > look at bash first? Is any other process, including bash, getting read access to the terminal? If not, how can this be a bash bug? -- ``The lyf so short, the craft so long to lerne.'' - Chaucer ``Ars longa, vita brevis'' - Hippocrates Chet Ramey, UTech, CWRUc...@case.eduhttp://tiswww.cwru.edu/~chet/
An exported function is malformed if it contains a nested function definition with heredoc
Configuration Information [Automatically generated, do not change]:
Machine: x86_64
OS: linux-gnu
Compiler: gcc
Compilation CFLAGS: -g -O2 -fdebug-prefix-map=/build/bash-2bxm7h/bash-
5.0=. -fstack-protector-strong -Wformat -Werror=format-security -Wall
-Wno-parentheses -Wno-format-security
uname output: Linux hostname 4.19.0-8-amd64 #1 SMP Debian 4.19.98-1
(2020-01-26) x86_64 GNU/Linux
Machine Type: x86_64-pc-linux-gnu
Bash Version: 5.0
Patch Level: 3
Release Status: release
Description:
A function containing a nested function definition with heredoc
cannot be serialized into the environment variable correctly,
and leads to failures in a subshell.
See also:
https://stackoverflow.com/questions/60564674/exporting-a-function-with-a-nested-function-definition-and-heredoc-in-bash
Repeat-By:
Create a script:
#!/bin/bash
f() {
g() {
cat <
Re: An exported function is malformed if it contains a nested function definition with heredoc
On 3/6/20 9:48 AM, Sherwood Wang wrote: > Bash Version: 5.0 > Patch Level: 3 > Release Status: release > > Description: > > A function containing a nested function definition with heredoc > cannot be serialized into the environment variable correctly, > and leads to failures in a subshell. This was fixed back in July, the result of https://lists.gnu.org/archive/html/bug-bash/2019-06/msg00063.html and the fix is in the devel branch. -- ``The lyf so short, the craft so long to lerne.'' - Chaucer ``Ars longa, vita brevis'' - Hippocrates Chet Ramey, UTech, CWRUc...@case.eduhttp://tiswww.cwru.edu/~chet/
