Allow bash completion to complete tasks in other directories (#1303)

tests/completions/just.bash

@@ -0,0 +1,102 @@
+#!/usr/bin/env bash
+
+# --- Shared functions ---
+
+cdroot() {
+  cd "$(git rev-parse --show-toplevel)" > /dev/null
+}
+
+setup() {
+  cdroot
+  cd tests/completions > /dev/null
+}
+
+cleanup() {
+  unset COMP_WORDS
+  unset COMP_CWORD
+  unset COMPREPLY
+}
+
+reply_equals() {
+  local reply=$(declare -p COMPREPLY)
+  local expected="$1"
+
+  if [ "$reply" = "$expected" ]; then
+    echo "${FUNCNAME[1]}: ok"
+  else
+    exit_code='1'
+    echo >&2 "${FUNCNAME[1]}: failed! Completion for \`${COMP_WORDS[*]}\` does not match."
+
+    echo
+    diff -U3 --label expected <(echo "$expected") --label actual <(echo "$reply") >&2
+    echo
+  fi
+}
+
+# --- Initial Setup ---
+cdroot
+source ./completions/just.bash
+PATH="$(git rev-parse --show-toplevel)/target/debug:$PATH"
+exit_code='0'
+
+# --- Tests ---
+
+test_just_is_accessible() {
+  if just --version > /dev/null; then
+    echo "${FUNCNAME[0]}: ok"
+  else
+    echo "${FUNCNAME[0]}: failed! Can't find just binary."
+    echo "  PATH=$PATH"
+    echo
+    exit_code='1'
+  fi
+}
+setup
+test_just_is_accessible
+
+test_complete_all_recipes() {
+  COMP_WORDS=(just)
+  COMP_CWORD=1 _just just
+  reply_equals 'declare -a COMPREPLY=([0]="deploy" [1]="install" [2]="publish" [3]="push" [4]="test")'
+}
+cleanup
+setup
+test_complete_all_recipes
+
+test_complete_recipes_starting_with_i() {
+  COMP_WORDS=(just i)
+  COMP_CWORD=1 _just just
+  reply_equals 'declare -a COMPREPLY=([0]="install")'
+}
+cleanup
+setup
+test_complete_recipes_starting_with_i
+
+test_complete_recipes_starting_with_p() {
+  setup
+  COMP_WORDS=(just p)
+  COMP_CWORD=1 _just just
+  reply_equals 'declare -a COMPREPLY=([0]="publish" [1]="push")'
+}
+cleanup
+setup
+test_complete_recipes_starting_with_p
+
+test_complete_recipes_from_subdirs() {
+  COMP_WORDS=(just subdir/)
+  COMP_CWORD=1 _just just
+  reply_equals 'declare -a COMPREPLY=([0]="subdir/special" [1]="subdir/surprise")'
+}
+cleanup
+setup
+test_complete_recipes_from_subdirs
+cleanup
+
+# --- Conclusion ---
+
+if [ "$exit_code" = '0' ]; then
+  echo "All tests passed."
+else
+  echo "Some test[s] failed."
+fi
+exit "$exit_code"

tests/completions/justfile

@@ -0,0 +1,5 @@
+install:
+test:
+deploy:
+push:
+publish:

tests/completions/subdir/justfile

@@ -0,0 +1,2 @@
+special:
+surprise: