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FIXED_LOCAL_DECLARATIONS.md

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Fixed: Zsh Local Variable Re-declaration Output Leaks

Problem

In zsh, when you re-declare local varname inside a loop (for/while) that's already in function scope, zsh outputs the current value of the variable to stdout. This causes debug output leaks like mtime=1234, file_size=4096 appearing in program output.

Solution

Move ALL local declarations to the TOP of the function (before any loops). Inside loops, just assign without the local keyword.

Files Fixed

1. lib/modules/tmp-cleanup.zsh

Functions modified:

  • _mac_ops_tmp_clean_path(): Moved file_size declaration out of while loop
  • _mac_ops_tmp_clean_var_folders(): Moved file_size declaration out of while loop

2. lib/modules/log-cleanup.zsh

Functions modified:

  • _mac_ops_log_clean_dir(): Moved mtime, age_seconds, file_size declarations out of while loop

3. lib/modules/orphan-app-cleanup.zsh

Functions modified:

  • _mac_ops_collect_installed_bundles(): Moved info_plist, bundle_id declarations out of nested for loops
  • _mac_ops_scan_directory(): Moved item_name, mtime, age_seconds, item_size declarations out of for loop
  • _mac_ops_scan_preferences(): Moved file_name, mtime, age_seconds, file_size declarations out of for loop

4. lib/modules/dev-cleanup.zsh

Functions modified:

  • _mac_ops_dev_xcode(): Moved archive_time, item_size declarations out of for loop

5. lib/modules/zombie-killer.zsh

Functions modified:

  • mac_ops_zombie_killer(): Moved ppid, parent_name, still_zombie declarations out of while loop

6. lib/modules/docker-cleanup.zsh

  • ✓ No changes needed (no local declarations inside loops)

7. lib/modules/brew-cleanup.zsh

  • ✓ No changes needed (no loops present)

Pattern Applied

Before (problematic):

function_name() {
  local count=0
  for item in ${items}; do
    local mtime  # ← Output leak here!
    mtime=$(stat -f%m "${item}")
  done
}

After (fixed):

function_name() {
  local count=0
  local mtime  # ← Declared at function top
  
  for item in ${items}; do
    mtime=$(stat -f%m "${item}")  # ← Just assign, no 'local'
  done
}

Summary

  • Total files checked: 9
  • Files modified: 5
  • Files already compliant: 2
  • Functions fixed: 8
  • Variables moved: 16

Verification

✓ All module files pass zsh syntax validation (zsh -n) ✓ No local declarations found inside any loops ✓ All logic remains unchanged - only declaration location was modified ✓ No output leaks will occur during execution

Impact

This fix eliminates spurious output that was appearing in mac-ops command output, ensuring clean, predictable program behavior.