terminology: call them null-terminated stringsbagder/null-terminate

Updated terminology in docs, comments and phrases to refer to C strings
as "null-terminated". Done to unify with how most other C oriented docs
refer of them and what users in general seem to prefer (based on a
single highly unscientific poll on twitter).

Reported-by: coinhubs on github
Fixes #5598

3 files changed, 5 insertions, 5 deletions

diff --git a/tests/libtest/lib547.c b/tests/libtest/lib547.c
index 85e8e0c1e..1416f895c 100644
--- a/tests/libtest/lib547.c
+++ b/tests/libtest/lib547.c
@@ -101,7 +101,7 @@ int test(char *URL)
   test_setopt(curl, CURLOPT_VERBOSE, 1L);
   test_setopt(curl, CURLOPT_HEADER, 1L);
 #ifdef LIB548
-  /* set the data to POST with a mere pointer to a zero-terminated string */
+  /* set the data to POST with a mere pointer to a null-terminated string */
   test_setopt(curl, CURLOPT_POSTFIELDS, UPLOADTHIS);
 #else
   /* 547 style, which means reading the POST data from a callback */
diff --git a/tests/libtest/lib553.c b/tests/libtest/lib553.c
index 95b5ac393..015bf29ac 100644
--- a/tests/libtest/lib553.c
+++ b/tests/libtest/lib553.c
@@ -5,7 +5,7 @@
  *                            | (__| |_| |  _ <| |___
  *                             \___|\___/|_| \_\_____|
  *
- * Copyright (C) 1998 - 2018, Daniel Stenberg, <daniel@haxx.se>, et al.
+ * Copyright (C) 1998 - 2020, Daniel Stenberg, <daniel@haxx.se>, et al.
  *
  * This software is licensed as described in the file COPYING, which
  * you should have received as part of this distribution. The terms
@@ -77,7 +77,7 @@ int test(char *URL)
   for(i = 0; i < NUM_HEADERS; i++) {
     int len = msnprintf(buf, sizeof(buf), "Header%d: ", i);
     memset(&buf[len], 'A', SIZE_HEADERS);
-    buf[len + SIZE_HEADERS] = 0; /* zero terminate */
+    buf[len + SIZE_HEADERS] = 0; /* null-terminate */
     hl = curl_slist_append(headerlist,  buf);
     if(!hl)
       goto test_cleanup;
diff --git a/tests/libtest/lib651.c b/tests/libtest/lib651.c
index 18bcaae83..777f6f59b 100644
--- a/tests/libtest/lib651.c
+++ b/tests/libtest/lib651.c
@@ -5,7 +5,7 @@
  *                            | (__| |_| |  _ <| |___
  *                             \___|\___/|_| \_\_____|
  *
- * Copyright (C) 1998 - 2017, Daniel Stenberg, <daniel@haxx.se>, et al.
+ * Copyright (C) 1998 - 2020, Daniel Stenberg, <daniel@haxx.se>, et al.
  *
  * This software is licensed as described in the file COPYING, which
  * you should have received as part of this distribution. The terms
@@ -40,7 +40,7 @@ int test(char *URL)
   for(i = 0; i < size ; i++)
     memset(&buffer[i * 1000], 65 + i, 1000);
 
-  buffer[ sizeof(buffer)-1] = 0; /* zero terminate */
+  buffer[ sizeof(buffer)-1] = 0; /* null-terminate */
 
   if(curl_global_init(CURL_GLOBAL_ALL) != CURLE_OK) {
     fprintf(stderr, "curl_global_init() failed\n");