feat: more skills

external/mattpocock/skills/wizard/template.sh

@@ -70,7 +70,7 @@ open_url() {
     elif command -v explorer.exe >/dev/null 2>&1; then explorer.exe "$url"
     elif command -v xdg-open    >/dev/null 2>&1; then xdg-open "$url"
     elif command -v open        >/dev/null 2>&1; then open "$url"
-    else warn "couldn't open a browser; visit it manually: $url"; fi
+    else false; fi
   } >/dev/null 2>&1 || warn "couldn't open a browser, so visit it manually: $url"
 }
 
@@ -88,52 +88,57 @@ confirm() {
   [[ "$reply" =~ ^[Yy] ]]
 }
 
-# _existing KEY: current value of KEY in ENV_FILE, if any.
+# _existing KEY: current value of KEY in ENV_FILE, if any, with write_env's quoting undone.
 _existing() {
   [[ -f "$ENV_FILE" ]] || return 1
-  local line; line=$(grep -E "^${1}=" "$ENV_FILE" | tail -n1) || return 1
-  printf '%s' "${line#*=}"
+  local line value sq="'\\''"; line=$(grep -E "^${1}=" "$ENV_FILE" | tail -n1) || return 1
+  value="${line#*=}"
+  if [[ "$value" == \'*\' ]]; then value="${value:1:${#value}-2}"; value="${value//"$sq"/\'}"; fi
+  printf '%s' "$value"
 }
 
 # ask KEY "Prompt" reads a value into $KEY. Offers the existing .env value as
-# a default on re-runs (Enter keeps it). Visible input (non-secret).
+# a default on re-runs (Enter keeps it). Visible input (non-secret), edited
+# with Readline. Fails at EOF with no input.
 ask() {
-  local key="$1" prompt="$2" current input
+  local key="$1" prompt="$2" current input s=$'\001' e=$'\002' p rc=0
   current=$(_existing "$key" || true)
-  if [[ -n "$current" ]]; then
-    printf '  %s%s%s %s[Enter keeps current]%s ' "$BOLD" "$prompt" "$RESET" "$DIM" "$RESET"
-  else
-    printf '  %s%s%s ' "$BOLD" "$prompt" "$RESET"
-  fi
-  read -r input || true
+  # Readline needs the colour codes wrapped in \001..\002 to place the cursor.
+  p="  $s$BOLD$e$prompt$s$RESET$e "
+  [[ -n "$current" ]] && p+="$s$DIM$e[Enter keeps current]$s$RESET$e "
+  read -e -r -p "$p" input || rc=1
+  if (( rc )) && [[ -z "$input" ]]; then return 1; fi
   [[ -z "$input" && -n "$current" ]] && input="$current"
   printf -v "$key" '%s' "$input"
 }
 
 # ask_secret KEY "Prompt" is like ask, but input is hidden.
 ask_secret() {
-  local key="$1" prompt="$2" current input
+  local key="$1" prompt="$2" current input rc=0
   current=$(_existing "$key" || true)
   if [[ -n "$current" ]]; then
     printf '  %s%s%s %s[Enter keeps current]%s ' "$BOLD" "$prompt" "$RESET" "$DIM" "$RESET"
   else
     printf '  %s%s%s ' "$BOLD" "$prompt" "$RESET"
   fi
-  read -rs input || true
+  read -rs input || rc=1
   printf '\n'
+  if (( rc )) && [[ -z "$input" ]]; then return 1; fi
   [[ -z "$input" && -n "$current" ]] && input="$current"
   printf -v "$key" '%s' "$input"
 }
 
-# write_env KEY VALUE upserts KEY=VALUE into ENV_FILE (creates it; replaces
-# any existing line). Idempotent.
+# write_env KEY VALUE upserts KEY='VALUE' into ENV_FILE (replaces any existing
+# line). Idempotent. Creates ENV_FILE at mode 0600; writes through a symlink
+# and keeps an existing file's mode.
 write_env() {
-  local key="$1" value="$2" tmp
-  touch "$ENV_FILE"
+  local key="$1" value="$2" tmp sq="'\\''"
+  [[ -e "$ENV_FILE" ]] || (umask 077 && : > "$ENV_FILE")
   tmp=$(mktemp)
   grep -vE "^${key}=" "$ENV_FILE" > "$tmp" || true
-  printf '%s=%s\n' "$key" "$value" >> "$tmp"
-  mv "$tmp" "$ENV_FILE"
+  printf "%s='%s'\n" "$key" "${value//\'/$sq}" >> "$tmp"
+  cat "$tmp" > "$ENV_FILE"
+  rm -f "$tmp"
   WRITTEN_ENV+=("$key")
   printf '  %s✓ wrote%s %s → %s\n' "$GREEN" "$RESET" "$key" "$ENV_FILE"
 }