feat(bash): shell/prompt modernization — 8 focused improvements

.aliases

@@ -45,7 +45,24 @@ alias glgcm='git log --before=$(date -d"+ 1 month" "+%Y-%m-01") --after=$(date "
 alias glgt='git log --since="yesterday" --author="$(git config user.name)" --pretty=format:"%cd - %h - %s" \
   --date=short --no-merges'
 alias reflog='git reflog --pretty=raw | tig --pretty=raw'
-alias merged='git branch --merged master | grep -v master | xargs -n 1 git branch -d && git fetch --prune'
+merged() {
+  local base_ref
+
+  base_ref=$(git symbolic-ref --quiet --short refs/remotes/origin/HEAD 2>/dev/null ||
+    { git show-ref --verify --quiet refs/remotes/origin/main && printf '%s\n' origin/main; } ||
+    { git show-ref --verify --quiet refs/remotes/origin/master && printf '%s\n' origin/master; })
+
+  if [[ -z "$base_ref" ]]; then
+    echo "merged: unable to determine default branch (origin/HEAD not set)" >&2
+    return 1
+  fi
+
+  git branch --merged "$base_ref" |
+    grep -vE '^\*|^[[:space:]]*(main|master)$' |
+    while read -r b; do git branch -d "$b"; done
+
+  git fetch --prune
+}
 alias gsw='git switch'
 alias gswc='git switch -c'
 alias grs='git restore'
@@ -66,8 +83,8 @@ alias j='jobs -l'
 
 # grep
 alias grep='grep --color=auto'
-alias egrep='egrep --color=auto'
-alias fgrep='fgrep --color=auto'
+alias egrep='grep -E --color=auto'
+alias fgrep='grep -F --color=auto'
 
 # Quick HTTP server
 alias serve='ruby -run -e httpd . -p 8080'
@@ -192,7 +209,6 @@ fi
 # kubectl
 if command -v kubectl &>/dev/null; then
   alias k=kubectl
-  complete -F __start_kubectl k
 
   alias netshoot='kubectl run netshoot-$(date +%s) --rm -i --tty --image nicolaka/netshoot -- /bin/bash'
 fi

.config/bash/completions.bash

@@ -27,3 +27,22 @@ if [[ -n "${HOMEBREW_PREFIX}" ]]; then
     unset _completion
   fi
 fi
+
+# gh CLI completions (includes gh copilot)
+if command -v gh &>/dev/null && ! complete -p gh &>/dev/null; then
+  eval "$(gh completion -s bash)"
+fi
+
+# kubectl completions (also covers the k alias defined in .aliases)
+if command -v kubectl &>/dev/null; then
+  if ! declare -F __start_kubectl &>/dev/null; then
+    # shellcheck source=/dev/null
+    source <(kubectl completion bash)
+  fi
+  complete -o default -F __start_kubectl k
+fi
+
+# terraform completions
+if command -v terraform &>/dev/null; then
+  complete -C terraform terraform
+fi

.config/bash/options.bash

@@ -24,3 +24,18 @@ shopt -s extglob
 
 # case-insensitive glob matching
 shopt -s nocaseglob
+
+# enable ** recursive globbing (e.g. ls **/*.rb)
+shopt -s globstar
+
+# update LINES/COLUMNS after each command (fixes resize artefacts)
+shopt -s checkwinsize
+
+# cd by typing a path alone, without the cd command
+shopt -s autocd
+
+# spell-correction for directory tab-completion
+shopt -s dirspell
+
+# show history expansion result in readline buffer before executing
+shopt -s histverify

.inputrc

@@ -5,3 +5,11 @@ set show-all-if-ambiguous on
 set show-mode-in-prompt on
 set vi-cmd-mode-string \1\e[2 q\2
 set vi-ins-mode-string \1\e[1 q\2
+
+# Visual improvements
+set colored-stats on
+set colored-completion-prefix on
+set mark-symlinked-directories on
+set visible-stats on
+set menu-complete-display-prefix on
+set page-completions off

.profile

@@ -33,7 +33,7 @@ fi
 export HISTFILE="${HOME}/.bash_history"
 export HISTSIZE=32768
 export HISTFILESIZE=$HISTSIZE
-export HISTCONTROL='ignoreboth'
+export HISTCONTROL='ignoreboth:erasedups'
 export HISTIGNORE='ls:cd:cd -:pwd:exit:date:*--help:vault*:*VAULT_TOKEN*:*NOMAD_TOKEN*:*CONSUL_HTTP_TOKEN*'
 export HISTTIMEFORMAT='%h/%d -- %H:%M:%S '
 
@@ -57,7 +57,13 @@ fi
 export MANPATH="$HOME/.homebrew/share/man${MANPATH+:$MANPATH}:"
 
 # Don't clear the screen after quitting a manual page
-export MANPAGER='less -X'
+# Use bat for syntax-highlighted man pages when available, otherwise fall back
+if command -v bat >/dev/null 2>&1; then
+  export MANPAGER="sh -c 'col -bx | bat -l man -p'"
+  export MANROFFOPT='-c'
+else
+  export MANPAGER='less -X'
+fi
 
 # color scheme
 # Keep the terminal's own TERM value (e.g. `xterm-ghostty`) when its terminfo
@@ -96,7 +102,7 @@ export MYSQL_PS1='(\D) \u@\h [\d] > '
 # 20ms for key sequences
 export KEYTIMEOUT=20
 
-# Setting ag as the default source for fzf
+# Setting rg as the default source for fzf
 export FZF_DEFAULT_COMMAND='rg --files --ignore-vcs --hidden'
 
 # fzf preview