simplify bash completions install

Makefile

@@ -1,5 +1,4 @@
 .DEFAULT_GOAL := build
-SHELL := /bin/bash
 
 .PHONY: build
 build:
@@ -31,4 +30,4 @@ top:
 
 .PHONY: install_bash_completions
 install_bash_completions:
-	. ./install-bash-completions.sh
+	./install-bash-completions.sh

install-bash-completions.sh

@@ -8,26 +8,15 @@ bashrc="$HOME/.bashrc"
 source_line="source $completion_path"
 
 # Check if the ~/.local/share/bash-completion directory exists, create it if it doesn't
-# If the directory doesn't exist it's likely the first time the script is run. We don't want to repeat it every time.
 if [ ! -d "$completion_dir" ]; then
-  echo "Setting up bash completions for Passage. Installing in $completion_dir and source them in your .bashrc file."
-  echo "Directory $completion_dir does not exist. Creating it."
   mkdir -p "$completion_dir"
 fi
 
-if [ ! -f "$completion_path" ]; then
-  # Copy the passage-completion.sh file into the completion directory, replacing any existing file
-  echo "Copying $completion_file into $completion_dir."
-fi
-
 # Always copy the file, even if it already exists. This will update the completions
 cp -f "$completion_file" "$completion_path"
 
-# Check if the source line is already in the ~/.bashrc file, append it if not
+# Check if the completions are already sourced in the ~/.bashrc file, inform on how to add completions if not
 if ! grep -Fq "$source_line" "$bashrc"; then
-  echo "Updating $bashrc to source the completions."
-  echo "$source_line" >> "$bashrc"
-
-  # Source the completions in the current shell
-  source "$completion_path"
+  echo -e "Installed bash completions script for passage. To have them working, update the $bashrc file to source the completions: \n"
+  echo "echo \"$source_line\" >> ~/.bashrc"
 fi