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.

1 files changed, 0 insertions, 1 deletions

diff --git a/include/mingw.h b/include/mingw.h
index 8dd905c23..3cf0526f2 100644
--- a/include/mingw.h
+++ b/include/mingw.h
@@ -545,7 +545,6 @@ int kill_SIGTERM_by_handle(HANDLE process);
 
 char *is_prefixed_with_case(const char *string, const char *key) FAST_FUNC;
 char *is_suffixed_with_case(const char *string, const char *key) FAST_FUNC;
-void qsort_string_vector_case(char **sv, unsigned count) FAST_FUNC;
 
 #define VT_OUTPUT       1
 #define VT_INPUT        2