upd: check if working tree is dirty

.config/shell/bin/upd

@@ -1,6 +1,6 @@
 #!/bin/bash
 
-set -e
+set -eu
 
 # Check for git
 if ! command -v git > /dev/null; then
@@ -10,25 +10,36 @@ fi
 
 # Set colors
 if command -v tput > /dev/null; then
+   YELLOW="$(tput setaf 3)"
    GREEN="$(tput setaf 2)"
    NC="$(tput sgr0)"
 elif [ -n "$TERMUX_VERSION" ]; then
+   YELLOW=""
    GREEN=""
    NC="(B"
 fi
 
+# Avoiding copy pasting this over and over
+g() { git -C "$REPO" "$@"; }
+
+# shellcheck disable=SC2016
+REPO_ABBR='echo ${REPO/"$HOME"/"~"}'
+
 # `git pull` everything mentioned in the REPOS_TO_UPDATE variable
-IFS=: read -ra REPOS_TO_UPDATE_ARR <<< "$REPOS_TO_UPDATE:$DOCS_DIR:$HOME/bin"
+IFS=: read -ra REPOS_TO_UPDATE_ARR <<< "${REPOS_TO_UPDATE:-}:$DOCS_DIR:$HOME/bin"
 for REPO in "${REPOS_TO_UPDATE_ARR[@]}"; do
    if [ -n "$REPO" ]; then
-      if git -C "$REPO" rev-parse > /dev/null 2>&1; then
-         echo " ${GREEN}Pulling ${REPO/"$HOME"/"~"}‥${NC}"
-         git -C "$REPO" pull
+      if g rev-parse > /dev/null 2>&1; then
+         echo " ${GREEN}Pulling $(eval "$REPO_ABBR")‥${NC}"
+         g pull
+         g diff --quiet || echo "${YELLOW}Warning: Working tree for $(eval "$REPO_ABBR") is dirty${NC}"
       fi
    fi
+   UPDATED_STUFF=true
 done
 
 # check for dotfiles updates
-echo
+${UPDATED_STUFF:-false} && echo
 echo " ${GREEN}Updating dotfiles…${NC}"
 dotfiles pull
+dotfiles diff --quiet || echo "${YELLOW}Warning: Working tree for dotfiles is dirty${NC}"