fish: added load_env func for loading a .env file

fish/.config/fish/config.fish

@@ -18,5 +18,28 @@ set -x PATH /Users/scie/.local/nvim-macos-arm64/bin \
   /usr/bin \
   /bin
 if status is-interactive
-    # Commands to run in interactive sessions can go here
+  function source_env
+    if not test -f .env
+      echo "No .env file found in current directory"
+      return 1
+    end
+
+    for line in (cat .env)
+      set line (string trim -- $line)
+      # Skip empty lines and comments
+      if test -z "$line" -o (string sub --start 1 --length 1 "$line") = "#"
+        continue
+      end
+      # Check if line contains =
+      if string match -q "*=*" "$line"
+        set parts (string split -m1 '=' "$line")
+        set var_name $parts[1]
+        set var_value $parts[2]
+        # Remove surrounding quotes if present
+        set var_value (string trim --chars='"' "$var_value")
+        set var_value (string trim --chars="'" "$var_value")
+        set -x $var_name $var_value
+      end
+    end
+  end
 end

fish/.config/fish/functions/load_env.fish

@@ -0,0 +1,45 @@
+# Copilot Generated
+function load_env --description 'Load environment variables from a .env file (defaults to ./.env)'
+    set -l env_file ".env"
+    if test (count $argv) -gt 0
+        set env_file $argv[1]
+    end
+
+    if not test -f "$env_file"
+        echo "Error: Environment file not found: $env_file" >&2
+        return 1
+    end
+
+    for line in (cat -- "$env_file")
+        set -l trimmed (string trim -- "$line")
+        # Skip empty lines and comments
+        if test -z "$trimmed"; or string match -q -r "^\s*#" -- "$trimmed"
+            continue
+        end
+
+        # Only process lines with =
+        if not string match -q -- '*=*' "$trimmed"
+            continue
+        end
+
+        # Use regex to extract key and value, and preserve quotes in value
+        set -l key (string match -r '^[^=]+' "$trimmed")
+        set -l rest (string match -r '=[\s\S]*$' "$trimmed")
+
+        if test -z "$key" -o -z "$rest"
+            continue
+        end
+
+        set -l key (string trim -- "$key")
+        set -l value (string trim -- (string sub -s 2 -- "$rest")) # Remove leading '='
+
+        # Validate variable name
+        if not string match -q -r '^[a-zA-Z_][a-zA-Z0-9_]*$' "$key"
+            echo "Warning: Invalid variable name '$key'. Skipping."
+            continue
+        end
+
+        # Reconstruct assignment and use eval to preserve value as-is
+        eval "set -gx $key $value"
+    end
+end