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@@ -0,0 +1,22 @@
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+--- a/libbb/lineedit.c
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++++ b/libbb/lineedit.c
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+@@ -632,6 +632,19 @@ static void free_tab_completion_data(voi
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+
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+ static void add_match(char *matched)
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+ {
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++ unsigned char *p = (unsigned char*)matched;
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++ while (*p) {
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++ /* ESC attack fix: drop any string with control chars */
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++ if (*p < ' '
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++ || (!ENABLE_UNICODE_SUPPORT && *p >= 0x7f)
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++ || (ENABLE_UNICODE_SUPPORT && *p == 0x7f)
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++ ) {
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++ free(matched);
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++ return;
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++ }
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++ p++;
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++ }
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++
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+ matches = xrealloc_vector(matches, 4, num_matches);
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+ matches[num_matches] = matched;
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+ num_matches++;
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