Cargo cult some stuff from Pop!_OS 21.10

dot/bashrc

@@ -8,10 +8,8 @@ case $- in
       *) return;;
 esac
 
-# don't put duplicate lines in the history. See bash(1) for more options
-# don't overwrite GNU Midnight Commander's setting of `ignorespace'.
-HISTCONTROL=$HISTCONTROL${HISTCONTROL+,}ignoredups
-# ... or force ignoredups and ignorespace
+# don't put duplicate lines or lines starting with space in the history.
+# See bash(1) for more options
 HISTCONTROL=ignoreboth
 
 # append to the history file, don't overwrite it
@@ -33,14 +31,14 @@ shopt -s globstar
 [ -x /usr/bin/lesspipe ] && eval "$(SHELL=/bin/sh lesspipe)"
 
 # set variable identifying the chroot you work in (used in the prompt below)
-if [ -z "$debian_chroot" ] && [ -r /etc/debian_chroot ]; then
+if [ -z "${debian_chroot:-}" ] && [ -r /etc/debian_chroot ]; then
     debian_chroot=$(cat /etc/debian_chroot)
 fi
 . ~/etc/setup_path
 
 # set a fancy prompt (non-color, unless we know we "want" color)
 case "$TERM" in
-    xterm-color) color_prompt=yes;;
+    xterm-color|*-256color) color_prompt=yes;;
 esac
 
 # uncomment for a colored prompt, if the terminal has the capability; turned
@@ -102,19 +100,22 @@ xterm*|rxvt*)
 esac
 
 # enable color support of ls and also add handy aliases
-if [ "$TERM" != "dumb" ]; then
+if [ -x /usr/bin/dircolors ]; then
     test -r ~/.dircolors && eval "$(dircolors -b ~/.dircolors)" || eval "$(dircolors -b)"
     alias ls='ls --color=auto'
-    #alias dir='ls --color=auto --format=vertical'
-    #alias vdir='ls --color=auto --format=long'
+    #alias dir='dir --color=auto'
+    #alias vdir='vdir --color=auto'
 
     alias grep='grep --color=auto'
     alias fgrep='fgrep --color=auto'
     alias egrep='egrep --color=auto'
 fi
 
+# colored GCC warnings and errors
+#export GCC_COLORS='error=01;31:warning=01;35:note=01;36:caret=01;32:locus=01:quote=01'
+
 # some more ls aliases
-alias ll='ls -l'
+alias ll='ls -alF'
 alias la='ls -A'
 alias l='ls -CF'
 # Add an "alert" alias for long running commands.  Use like so:
@@ -136,8 +137,12 @@ fi
 # enable programmable completion features (you don't need to enable
 # this, if it's already enabled in /etc/bash.bashrc and /etc/profile
 # sources /etc/bash.bashrc).
-if [ -f /etc/bash_completion ] && ! shopt -oq posix; then
+if ! shopt -oq posix; then
+  if [ -f /usr/share/bash-completion/bash_completion ]; then
+    . /usr/share/bash-completion/bash_completion
+  elif [ -f /etc/bash_completion ]; then
     . /etc/bash_completion
+  fi
 fi
 
 status(){