win32: case-sensitivity in tab completion

The tab-completion code treated all matches as case-insensitive
because that's how Microsoft Windows handles filenames.

This is now inadequate, as shell builtins, functions and aliases
are case sensitive.

Modify the treatment of case-sensitivity in tab completion:

- Track whether each potential match is case-insensitive (filename)
  or case-sensitive (shell builtin, function or alias).

- When comparing matches use a case-insensitive comparison if either
  value is a filename.  Otherwise use a case-sensitive comparison.

Adds 64 bytes.

0 files changed, 0 insertions, 0 deletions