bash_aliases: add search tools

.bash_aliases

@@ -1,3 +1,11 @@
+export LESS="--RAW-CONTROL-CHARS --ignore-case --LONG-PROMPT --jump-target=5 $(test $(less --version | head -1 | cut -f2 -d' ') -ge 590 && echo --incsearch)"
+bind '"\ek":history-search-backward'
+bind '"\ej":history-search-forward'
+
+if test -f /etc/bash_completion && ! shopt -oq posix
+then . /etc/bash_completion
+fi
+
 # ls aliases
 
 export LS_OPTIONS='--human-readable --si --group-directories-first --file-type --dereference-command-line'
@@ -5,11 +13,20 @@ eval "$(dircolors)"
 alias ls='ls --color=auto'
 alias ll='ls $LS_OPTIONS -l --all'
 alias l='ls $LS_OPTIONS --color=always --almost-all'
-which bat >/dev/null || alias bat=batcat
+which bat >/dev/null || alias bat="$(which batcat >/dev/null && echo batcat || echo less -FX)"
 b() {
 	test -d "${1:-.}" && l "$@" || bat "$@"
 }
-alias v=nvim
+alias v="$(which nvim >/dev/null && echo nvim || echo ${EDITOR:-vi})"
+
+# Grep aliases
+
+# Default grep with some niceties
+alias grpc='grep --color=auto --line-number --binary-files=without-match --directories=skip'
+# Default grep with some niceties and ignoring case
+alias grp='grpc --ignore-case'
+# Grep recursively and paginate
+grpr() { grp --color=always --recursive $(echo $DIRS_IGNORE | sed 's/-x/--exclude-dir/g') "$@" | less -FX; }
 
 # Some aliases to avoid making mistakes: