translate-shell: Change setting for trans and gawk binaries

The current approach wasn't very clear how the PATH variable was used
later in the script.
Now the actual required binaries can be changed and are being used.

This also fixes an issue with the implementation which relied on GNU
tail and head which are by default not available on MacOS.
By hard coding the complete path ensure that BSD tail and head are being
used.

Author: MarcelBochtler

commands/apps/translate-shell/translate-shell-language-pair.py

@@ -5,10 +5,9 @@
 # Install with Homebrew: `brew install translate-shell`
 # or install with MacPorts: `sudo port install translate-shell`
 
-# translate-shell requires gawk to be accessible from PATH.
-# This is not the case if the Homebrew prefix was customized or when using macports.
-# Add your PATH here, if required.
-# PATH="$PATH"
+# Set required paths to binaries required for translate-shell.
+GAWK='/usr/local/bin/gawk'
+TRANS='/usr/local/bin/trans'
 
 # Required parameters:
 # @raycast.schemaVersion 1
@@ -68,8 +67,9 @@ def white(message):
 
 def translate(lang, query):
     cmd = f"""
-    PATH="{PATH}"
-    trans '{lang}' -dump '{query}' | tail -n +2  | head -n -2
+    # Ensure gawk is available in PATH, as translate-shell requires it.
+    PATH="$(dirname {GAWK}):$PATH"
+    {TRANS} '{lang}' -dump '{query}' | /usr/bin/tail -n +2  | /usr/bin/head -n 1
     """
 
     stream = os.popen(cmd)