如何繁殖
將以下示例復制到終端會話中；
gawk '{
print $0;
}' <<'EOF'
first
second
third
EOF
按<Enter>，然后<Arrow-Up>
[user@host ~]$ gawk '{ print $0; }' <<'EOF'first second third EOF
注意}' <<'EOF'first第一個新行被消耗的位。
將以下示例復制到終端會話中；
gawk '{ print $0; }' <<'EOF'
forth
fifth
sixth
EOF
按<Enter>，然后<Arrow-Up>
[user@host ~]$ gawk '{ print $0; }' <<'EOF' forth fifth sixth EOF
注意}' <<'EOF'第一個新行沒有被消耗的位。
問題
如何讓 Bash 正確附加到歷史記錄？
我花了幾個小時在網上搜索其他人遇到這個問題，但沒有運氣，這是一個已知的錯誤嗎？
設備統計
bash --version
5.1.8(1)-release (x86_64-pc-linux-gnu)
echo "${TERM}"
xterm-256color
uname -ro
5.13.19-2-MANJARO GNU/Linux
組態檔
~/.profile
export QT_QPA_PLATFORMTHEME="qt5ct"
export EDITOR=/usr/bin/nano
export GTK2_RC_FILES="$HOME/.gtkrc-2.0"
. "$HOME/.cargo/env"
export PATH="${HOME}/.npm-global/bin:${PATH}"
~/.bashrc
#
# ~/.bashrc
#
[[ $- != *i* ]] && return
colors() {
local fgc bgc vals seq0
printf "Color escapes are %s\n" '\e[${value};...;${value}m'
printf "Values 30..37 are \e[33mforeground colors\e[m\n"
printf "Values 40..47 are \e[43mbackground colors\e[m\n"
printf "Value 1 gives a \e[1mbold-faced look\e[m\n\n"
# foreground colors
for fgc in {30..37}; do
# background colors
for bgc in {40..47}; do
fgc=${fgc#37} # white
bgc=${bgc#40} # black
vals="${fgc: $fgc;}${bgc}"
vals=${vals%%;}
seq0="${vals: \e[${vals}m}"
printf " %-9s" "${seq0:-(default)}"
printf " ${seq0}TEXT\e[m"
printf " \e[${vals: ${vals $vals;}}1mBOLD\e[m"
done
echo; echo
done
}
[ -r /usr/share/bash-completion/bash_completion ] && . /usr/share/bash-completion/bash_completion
# Change the window title of X terminals
case ${TERM} in
xterm*|rxvt*|Eterm*|aterm|kterm|gnome*|interix|konsole*)
PROMPT_COMMAND='echo -ne "\033]0;${USER}@${HOSTNAME%%.*}:${PWD/#$HOME/\~}\007"'
;;
screen*)
PROMPT_COMMAND='echo -ne "\033_${USER}@${HOSTNAME%%.*}:${PWD/#$HOME/\~}\033\\"'
;;
esac
use_color=true
# Set colorful PS1 only on colorful terminals.
# dircolors --print-database uses its own built-in database
# instead of using /etc/DIR_COLORS. Try to use the external file
# first to take advantage of user additions. Use internal bash
# globbing instead of external grep binary.
safe_term=${TERM//[^[:alnum:]]/?} # sanitize TERM
match_lhs=""
[[ -f ~/.dir_colors ]] && match_lhs="${match_lhs}$(<~/.dir_colors)"
[[ -f /etc/DIR_COLORS ]] && match_lhs="${match_lhs}$(</etc/DIR_COLORS)"
[[ -z ${match_lhs} ]] \
&& type -P dircolors >/dev/null \
&& match_lhs=$(dircolors --print-database)
[[ $'\n'${match_lhs} == *$'\n'"TERM "${safe_term}* ]] && use_color=true
if ${use_color} ; then
# Enable colors for ls, etc. Prefer ~/.dir_colors #64489
if type -P dircolors >/dev/null ; then
if [[ -f ~/.dir_colors ]] ; then
eval $(dircolors -b ~/.dir_colors)
elif [[ -f /etc/DIR_COLORS ]] ; then
eval $(dircolors -b /etc/DIR_COLORS)
fi
fi
if [[ ${EUID} == 0 ]] ; then
PS1='\[\033[01;31m\][\h\[\033[01;36m\] \W\[\033[01;31m\]]\$\[\033[00m\] '
else
PS1='\[\033[01;32m\][\u@\h\[\033[01;37m\] \W\[\033[01;32m\]]\$\[\033[00m\] '
fi
alias ls='ls --color=auto'
alias grep='grep --colour=auto'
alias egrep='egrep --colour=auto'
alias fgrep='fgrep --colour=auto'
else
if [[ ${EUID} == 0 ]] ; then
# show root@ when we don't have colors
PS1='\u@\h \W \$ '
else
PS1='\u@\h \w \$ '
fi
fi
unset use_color safe_term match_lhs sh
alias cp="cp -i" # confirm before overwriting something
alias df='df -h' # human-readable sizes
alias free='free -m' # show sizes in MB
alias np='nano -w PKGBUILD'
alias more=less
xhost local:root > /dev/null 2>&1
# Bash won't get SIGWINCH if another process is in the foreground.
# Enable checkwinsize so that bash will check the terminal size when
# it regains control. #65623
# http://cnswww.cns.cwru.edu/~chet/bash/FAQ (E11)
shopt -s checkwinsize
shopt -s expand_aliases
# Enable history appending instead of overwriting. #139609
shopt -s histappend
#
# # ex - archive extractor
# # usage: ex <file>
ex ()
{
if [ -f $1 ] ; then
case $1 in
*.tar.bz2) tar xjf $1 ;;
*.tar.gz) tar xzf $1 ;;
*.bz2) bunzip2 $1 ;;
*.rar) unrar x $1 ;;
*.gz) gunzip $1 ;;
*.tar) tar xf $1 ;;
*.tbz2) tar xjf $1 ;;
*.tgz) tar xzf $1 ;;
*.zip) unzip $1 ;;
*.Z) uncompress $1;;
*.7z) 7z x $1 ;;
*) echo "'$1' cannot be extracted via ex()" ;;
esac
else
echo "'$1' is not a valid file"
fi
}
. "$HOME/.cargo/env"
##
# Disable auto-escaping of path variables via tab-completion
# shopt -u progcomp
shopt -s direxpand
##
# Set editor for <C-x> <C-e> keyboard-shortcut
export EDITOR="$(which vim)"
##
# Find globally installed NPM scripts
export PATH="${PATH}:${HOME}/.npm/bin"
if [[ -d "${HOME}/.config/bashrc.d" ]]; then
for _p in "${HOME}/.config/bashrc.d/"*.bashrc; do
[[ -x "${_p}" ]] && {
source "${_p}"
}
done
fi
筆記
我已經在其他設備上測驗了示例命令，例如 Raspberry Pi（運行他們基于 Debian 的 Raspian），并且參考的新行沒有導致使用 heredoc 換行的問題。所以我有理由相信我的 Manjaro（KDE 風格）配置有問題。
I've also checked for differences with shopt options between devices, and
have not found anything, eg.
diff <(ssh rpi source '$HOME/.bashrc'; shopt -p) <(shopt -p)
#> No diff output
... So suggestions on other things to compare are certainly welcomed!
Near as I can tell there be some bug when writing to history, because;
[user@host ~]$ history 2 | head -n -1 #> 512 gawk '{ #> print $0; #> }' <<'EOF'first #> second #> third #> EOF
And when a session is closed history similar to the flowing is saved;
[user@host ~]$ history 7 | head -n -1 #> 487 gawk '{ #> 488 print $0; #> 489 }' <<'EOF'first #> 490 second #> 491 third #> 492 EOF
As recommended by @konsolebox I've reported this as a to the Bug Bash mailing list. And I'll do my best to update this OP here if any solutions are found.
uj5u.com熱心網友回復：
如何讓 Bash 正確附加到歷史記錄？
它看起來像是 5.1 中的一個合法錯誤（用 5.1 和 5.1.12 測驗），所以答案是你不能，除非它得到修復。考慮向 [email protected] 發送錯誤報告。該問題在 5.0 中不會重現。
PS 如果有人想知道我是如何測驗它的，我使用 Gentoo 并使用我制作的 ebuild 安裝了多個版本的 bash。請參閱https://github.com/konsolebox/overlay/tree/master/app-shells。
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