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deps/curl/docs/libcurl/curl_unescape.md

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+---
+c: Copyright (C) Daniel Stenberg, <daniel.se>, et al.
+SPDX-License-Identifier: curl
+Title: curl_unescape
+Section: 3
+Source: libcurl
+See-also:
+  - RFC 2396
+  - curl_easy_escape (3)
+  - curl_easy_unescape (3)
+  - curl_free (3)
+---
+
+# NAME
+
+curl_unescape - URL decodes the given string
+
+# SYNOPSIS
+
+~~~c
+#include <curl/curl.h>
+
+char *curl_unescape(const char *input, int length);
+~~~
+
+# DESCRIPTION
+
+Obsolete function. Use curl_easy_unescape(3) instead.
+
+This function converts the URL encoded string **input** to a "plain string"
+and return that as a new allocated string. All input characters that are URL
+encoded (%XX where XX is a two-digit hexadecimal number) are converted to
+their plain text versions.
+
+If the **length** argument is set to 0, curl_unescape(3) calls
+strlen() on **input** to find out the size.
+
+You must curl_free(3) the returned string when you are done with it.
+
+# EXAMPLE
+
+~~~c
+int main(void)
+{
+  CURL *curl = curl_easy_init();
+  if(curl) {
+    char *decoded = curl_unescape("%63%75%72%6c", 12);
+    if(decoded) {
+      /* do not assume printf() works on the decoded data */
+      printf("Decoded: ");
+      /* ... */
+      curl_free(decoded);
+    }
+  }
+}
+~~~
+
+# AVAILABILITY
+
+Since 7.15.4, curl_easy_unescape(3) should be used. This function might
+be removed in a future release.
+
+# RETURN VALUE
+
+A pointer to a null-terminated string or NULL if it failed.