spelling fixes

Detected using the `codespell` tool.

Also contains one URL protocol upgrade.

Closes https://github.com/curl/curl/pull/2334

12 files changed, 18 insertions, 17 deletions

diff --git a/lib/checksrc.pl b/lib/checksrc.pl
index 92af9000c..c222bb87c 100755
--- a/lib/checksrc.pl
+++ b/lib/checksrc.pl
@@ -26,7 +26,7 @@ my $indent = 2;
 
 my $warnings;
 my $errors;
-my $supressed; # whitelisted problems
+my $suppressed; # whitelisted problems
 my $file;
 my $dir=".";
 my $wlist;
@@ -60,7 +60,7 @@ my %warnings = (
     'ASTERISKNOSPACE'  => 'pointer declared without space before asterisk',
     'ASSIGNWITHINCONDITION'  => 'assignment within conditional expression',
     'EQUALSNOSPACE'    => 'equals sign without following space',
-    'NOSPACEEQUALS'    => 'equals sign without preceeding space',
+    'NOSPACEEQUALS'    => 'equals sign without preceding space',
     'SEMINOSPACE'      => 'semicolon without following space',
     'MULTISPACE'       => 'multiple spaces used when not suitable',
     );
@@ -101,7 +101,7 @@ sub checkwarn {
     }
 
     if($nowarn) {
-        $supressed++;
+        $suppressed++;
         if($w) {
             $swarnings++;
         }
@@ -422,7 +422,7 @@ sub scanfile {
                 # There is a quote here, figure out whether the comma is
                 # within a string or '' or not.
                 if($pref =~ /\"/) {
-                    # withing a string
+                    # within a string
                 }
                 elsif($pref =~ /\'$/) {
                     # a single letter
@@ -596,7 +596,7 @@ sub scanfile {
 
 if($errors || $warnings || $verbose) {
     printf "checksrc: %d errors and %d warnings\n", $errors, $warnings;
-    if($supressed) {
+    if($suppressed) {
         printf "checksrc: %d errors and %d warnings suppressed\n",
         $serrors,
         $swarnings;
diff --git a/lib/curl_ntlm_wb.c b/lib/curl_ntlm_wb.c
index 03f47a3a5..353a65645 100644
--- a/lib/curl_ntlm_wb.c
+++ b/lib/curl_ntlm_wb.c
@@ -364,7 +364,7 @@ CURLcode Curl_output_ntlm_wb(struct connectdata *conn,
   case NTLMSTATE_TYPE1:
   default:
     /* Use Samba's 'winbind' daemon to support NTLM authentication,
-     * by delegating the NTLM challenge/response protocal to a helper
+     * by delegating the NTLM challenge/response protocol to a helper
      * in ntlm_auth.
      * http://devel.squid-cache.org/ntlm/squid_helper_protocol.html
      * https://www.samba.org/samba/docs/man/manpages-3/winbindd.8.html
diff --git a/lib/ftp.c b/lib/ftp.c
index a119fe1b8..fec591918 100644
--- a/lib/ftp.c
+++ b/lib/ftp.c
@@ -1538,7 +1538,7 @@ static CURLcode ftp_state_type(struct connectdata *conn)
      date. */
   if(data->set.opt_no_body && ftpc->file &&
      ftp_need_type(conn, data->set.prefer_ascii)) {
-    /* The SIZE command is _not_ RFC 959 specified, and therefor many servers
+    /* The SIZE command is _not_ RFC 959 specified, and therefore many servers
        may not support it! It is however the only way we have to get a file's
        size! */
 
diff --git a/lib/mk-ca-bundle.vbs b/lib/mk-ca-bundle.vbs
index a9b983e9b..8da279268 100755
--- a/lib/mk-ca-bundle.vbs
+++ b/lib/mk-ca-bundle.vbs
@@ -314,7 +314,7 @@ Function RegExprFirst(SearchPattern, TheString)
   Set objRegExp = New RegExp                    ' create a regular expression.

   objRegExp.Pattern = SearchPattern             ' sets the search pattern.

   objRegExp.IgnoreCase = TRUE                   ' set to ignores case.

-  objRegExp.Global = TRUE                       ' set to gloabal search.

+  objRegExp.Global = TRUE                       ' set to global search.

   Set Matches = objRegExp.Execute(TheString)    ' do the search.

   If (Matches.Count) Then

     RegExprFirst = Matches(0).SubMatches(0)     ' return first match.

diff --git a/lib/objnames.inc b/lib/objnames.inc
index 6a5b2a837..e362f6e8e 100644
--- a/lib/objnames.inc
+++ b/lib/objnames.inc
@@ -86,7 +86,7 @@ curl_10char_object_name() {
 # curl_8char_object_name
 #
 # Same as curl_10char_object_name() description and details above, except
-# that object name is limited to 8 charcters maximum.
+# that object name is limited to 8 characters maximum.
 #
 
 curl_8char_object_name() {
diff --git a/lib/parsedate.c b/lib/parsedate.c
index 23a787fc9..aa27303fc 100644
--- a/lib/parsedate.c
+++ b/lib/parsedate.c
@@ -433,7 +433,7 @@ static int parsedate(const char *date, time_t *output)
           tzoff = (val/100 * 60 + val%100)*60;
 
           /* the + and - prefix indicates the local time compared to GMT,
-             this we need ther reversed math to get what we want */
+             this we need their reversed math to get what we want */
           tzoff = date[-1]=='+'?-tzoff:tzoff;
         }
 
diff --git a/lib/rtsp.c b/lib/rtsp.c
index 168e24593..c60697290 100644
--- a/lib/rtsp.c
+++ b/lib/rtsp.c
@@ -47,7 +47,7 @@
  *  -incoming server requests
  *      -server CSeq counter
  *  -digest authentication
- *  -connect thru proxy
+ *  -connect through proxy
  *  -pipelining?
  */
 
diff --git a/lib/sendf.c b/lib/sendf.c
index 227d1fc6a..27c0ccc73 100644
--- a/lib/sendf.c
+++ b/lib/sendf.c
@@ -389,7 +389,7 @@ ssize_t Curl_send_plain(struct connectdata *conn, int num,
       (WSAEWOULDBLOCK == err)
 #else
       /* errno may be EWOULDBLOCK or on some systems EAGAIN when it returned
-         due to its inability to send off data without blocking. We therefor
+         due to its inability to send off data without blocking. We therefore
          treat both error codes the same here */
       (EWOULDBLOCK == err) || (EAGAIN == err) || (EINTR == err) ||
       (EINPROGRESS == err)
@@ -456,7 +456,7 @@ ssize_t Curl_recv_plain(struct connectdata *conn, int num, char *buf,
       (WSAEWOULDBLOCK == err)
 #else
       /* errno may be EWOULDBLOCK or on some systems EAGAIN when it returned
-         due to its inability to send off data without blocking. We therefor
+         due to its inability to send off data without blocking. We therefore
          treat both error codes the same here */
       (EWOULDBLOCK == err) || (EAGAIN == err) || (EINTR == err)
 #endif
diff --git a/lib/sha256.c b/lib/sha256.c
index c2acb5265..55716c63b 100644
--- a/lib/sha256.c
+++ b/lib/sha256.c
@@ -242,7 +242,7 @@ static int SHA256_Final(unsigned char *out,
     sha256_compress(md, md->buf);
     md->curlen = 0;
   }
-  /* pad upto 56 bytes of zeroes */
+  /* pad up to 56 bytes of zeroes */
   while(md->curlen < 56) {
     md->buf[md->curlen++] = (unsigned char)0;
   }
diff --git a/lib/telnet.c b/lib/telnet.c
index 48b134ee3..78d3a853d 100644
--- a/lib/telnet.c
+++ b/lib/telnet.c
@@ -1460,7 +1460,8 @@ static CURLcode telnet_do(struct connectdata *conn, bool *done)
           if(n == 0)                        /* no bytes */
             break;
 
-          readfile_read = (DWORD)n; /* fall thru with number of bytes read */
+          /* fall through with number of bytes read */
+          readfile_read = (DWORD)n;
         }
         else {
           /* read from stdin */
diff --git a/lib/url.c b/lib/url.c
index 90afd03a6..f991ade5c 100644
--- a/lib/url.c
+++ b/lib/url.c
@@ -4117,7 +4117,7 @@ static CURLcode create_conn(struct Curl_easy *data,
    *************************************************************/
   if(prot_missing) {
     /* We're guessing prefixes here and if we're told to use a proxy or if
-       we're gonna follow a Location: later or... then we need the protocol
+       we're going to follow a Location: later or... then we need the protocol
        part added so that we have a valid URL. */
     char *reurl;
     char *ch_lower;
diff --git a/lib/urldata.h b/lib/urldata.h
index 975333867..3d7b9e5a5 100644
--- a/lib/urldata.h
+++ b/lib/urldata.h
@@ -1166,7 +1166,7 @@ struct Curl_http2_dep {
 };
 
 /*
- * This struct is for holding data that was attemped to get sent to the user's
+ * This struct is for holding data that was attempted to get sent to the user's
  * callback but is held due to pausing. One instance per type (BOTH, HEADER,
  * BODY).
  */