From 44477db354f67c4eacfced89fac5fbf3dbeaa3ff Mon Sep 17 00:00:00 2001
From: Ron Yorston <rmy@pobox.com>
Date: Sat, 8 Dec 2018 20:25:14 +0000
Subject: lineedit: more case-insensitive comparisons in tab completion

---
 libbb/bb_qsort.c | 12 ++++++++++++
 libbb/lineedit.c | 14 ++++++++++++++
 2 files changed, 26 insertions(+)

(limited to 'libbb')

diff --git a/libbb/bb_qsort.c b/libbb/bb_qsort.c
index 505045533..7afddf468 100644
--- a/libbb/bb_qsort.c
+++ b/libbb/bb_qsort.c
@@ -17,3 +17,15 @@ void FAST_FUNC qsort_string_vector(char **sv, unsigned count)
 {
 	qsort(sv, count, sizeof(char*), bb_pstrcmp);
 }
+
+#if ENABLE_PLATFORM_MINGW32
+static int bb_pstrcasecmp(const void *a, const void *b)
+{
+	return strcasecmp(*(char**)a, *(char**)b);
+}
+
+void FAST_FUNC qsort_string_vector_case(char **sv, unsigned count)
+{
+	qsort(sv, count, sizeof(char*), bb_pstrcasecmp);
+}
+#endif
diff --git a/libbb/lineedit.c b/libbb/lineedit.c
index 979e0d544..89178bbc3 100644
--- a/libbb/lineedit.c
+++ b/libbb/lineedit.c
@@ -684,6 +684,9 @@ static void input_forward(void)
 # if ENABLE_PLATFORM_MINGW32
 /* use case-insensitive comparisons for filenames */
 #  define is_prefixed_with(s, k) is_prefixed_with_case(s, k)
+#  define qsort_string_vector(s, c) qsort_string_vector_case(s, c)
+#  define strcmp(s, t) strcasecmp(s, t)
+#  define strncmp(s, t, n) strncasecmp(s, t, n)
 # endif
 
 static void free_tab_completion_data(void)
@@ -1278,7 +1281,11 @@ static NOINLINE void input_tab(smallint *lastWasTab)
 		for (cp = chosen_match; *cp; cp++) {
 			unsigned n;
 			for (n = 1; n < num_matches; n++) {
+# if !ENABLE_PLATFORM_MINGW32
 				if (matches[n][cp - chosen_match] != *cp) {
+# else
+				if (tolower(matches[n][cp - chosen_match]) != tolower(*cp)) {
+# endif
 					goto stop;
 				}
 			}
@@ -1351,6 +1358,13 @@ static NOINLINE void input_tab(smallint *lastWasTab)
 	free(match_buf);
 }
 
+# if ENABLE_PLATFORM_MINGW32
+#  undef is_prefixed_with
+#  undef qsort_string_vector
+#  undef strcmp
+#  undef strncmp
+# endif
+
 #endif  /* FEATURE_TAB_COMPLETION */
 
 
-- 
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