alias/general: `shellcheck`

aliases/available/general.aliases.bash

@@ -1,10 +1,9 @@
-cite about-alias
+# shellcheck shell=bash
 about-alias 'general aliases'
 
-if ls --color -d . &> /dev/null; then
+if command ls --color -d . &> /dev/null; then
 	alias ls="ls --color=auto"
-elif ls -G -d . &> /dev/null; then
-	alias ls='ls -G' # Compact view, show colors
+	# BSD `ls` doesn't need an argument (`-G`) when `$CLICOLOR` is set.
 fi
 
 # List directory contents
@@ -18,13 +17,13 @@ alias lf='ls -F'
 alias _="sudo"
 
 # Shortcuts to edit startup files
-alias vbrc="vim ~/.bashrc"
-alias vbpf="vim ~/.bash_profile"
+alias vbrc="${VISUAL:-vim} ~/.bashrc"
+alias vbpf="${VISUAL:-vim} ~/.bash_profile"
 
 # colored grep
 # Need to check an existing file for a pattern that will be found to ensure
 # that the check works when on an OS that supports the color option
-if grep --color=auto "a" "${BASH_IT}/"*.md &> /dev/null; then
+if command grep --color=auto "a" "${BASH_IT?}"/*.md &> /dev/null; then
 	alias grep='grep --color=auto'
 fi
 
@@ -36,12 +35,12 @@ alias c='clear'
 alias k='clear'
 alias cls='clear'
 
-alias edit="$EDITOR"
-alias pager="$PAGER"
+alias edit='${EDITOR:-${ALTERNATE_EDITOR?}}'
+alias pager='${PAGER:=less}'
 
 alias q='exit'
 
-alias irc="${IRC_CLIENT:=irc}"
+alias irc='${IRC_CLIENT:=irc}'
 
 # Language aliases
 alias rb='ruby'
@@ -74,13 +73,13 @@ alias rd='rmdir'
 alias xt="extract"
 
 # sudo editors
-alias svim="sudo vim"
+alias svim="sudo ${VISUAL:-vim}"
 alias snano="sudo nano"
 
 # Display whatever file is regular file or folder
-catt() {
+function catt() {
 	for i in "$@"; do
-		if [ -d "$i" ]; then
+		if [[ -d "$i" ]]; then
 			ls "$i"
 		else
 			cat "$i"
@@ -94,5 +93,5 @@ catt() {
 # aliases and enable just the ones for Bash-it explicitly:
 # bash-it disable alias general
 # bash-it enable alias bash-it
-# shellcheck source=./bash-it.aliases.bash
+# shellcheck source-path=SCRIPTDIR
 source "$BASH_IT/aliases/available/bash-it.aliases.bash"