tidy-up: miscellaneous

- drop stray duplicate empty lines in docs, scripts, test data, include,
  examples, tests.
- drop duplicate PP parenthesis.
- curl-functions.m4: move literals to the right side in if expressions,
  to match rest of the source code.
- FAQ.md: delete language designator from an URL.
- packages: apply clang-format (OS400, VMS).
- scripts/schemetable.c: apply clang-format.
- data320: delete duplicate empty line that doesn't change the outcome.
- spacecheck: extend to check for duplicate empty lines
  (with exceptions.)
- fix whitespace nits

Closes #19936

scripts/cd2cd

@@ -54,7 +54,6 @@ while(1) {
     }
 }
 
-
 use POSIX qw(strftime);
 my @ts;
 if(defined($ENV{SOURCE_DATE_EPOCH})) {

scripts/checksrc.pl

@@ -1205,7 +1205,6 @@ sub scanfile {
 
 }
 
-
 if($errors || $warnings || $verbose) {
     printf "checksrc: %d errors and %d warnings\n", $errors, $warnings;
     if($suppressed) {

scripts/ciconfig.pl

@@ -108,7 +108,6 @@ my %defaulton = (
 
     );
 
-
 sub configureopts {
     my ($opts)=@_;
     my %thisin;
@@ -189,7 +188,6 @@ for my $w (sort keys %avail) {
     }
 }
 
-
 print "ENABLED configure options that are not available\n";
 for my $w (sort keys %with) {
     if(!$avail{$w}) {

scripts/delta

@@ -95,7 +95,7 @@ my $deletes=`git diff-tree --diff-filter=A -r --summary origin/$branch $start 2>
 my $creates=`git diff-tree --diff-filter=D -r --summary origin/$branch $start 2>/dev/null | wc -l`;
 
 # Time since that tag
-my $tagged=`git for-each-ref --format="%(refname:short) | %(taggerdate:unix)" refs/tags/* | grep ^$start | cut "-d|" -f2`; # Unix timestamp
+my $tagged=`git for-each-ref --format="%(refname:short) | %(taggerdate:unix)" refs/tags/* | grep ^$start | cut '-d|' -f2`; # Unix timestamp
 my $taggednice=`git for-each-ref --format="%(refname:short) | %(creatordate)" refs/tags/* | grep ^$start | cut '-d|' -f2`; # human readable time
 chomp $taggednice;
 my $now=POSIX::strftime("%s", localtime());

scripts/firefox-db2pem.sh

@@ -54,7 +54,6 @@ cat > "$out" <<EOF
 ##
 EOF
 
-
 certutil -L -h 'Builtin Object Token' -d "$db" | \
 grep ' *[CcGTPpu]*,[CcGTPpu]*,[CcGTPpu]* *$' | \
 sed -e 's/ *[CcGTPpu]*,[CcGTPpu]*,[CcGTPpu]* *$//' -e 's/\(.*\)/"\1"/' | \

scripts/managen

@@ -85,7 +85,6 @@ sub manpageify {
     return "--$k$trail";
 }
 
-
 my $colwidth=79; # max number of columns
 
 sub prefixline {
@@ -500,7 +499,6 @@ sub render {
         # convert single backslash to double-backslash
         $d =~ s/\\/\\\\/g if($manpage);
 
-
         if($manpage) {
             if(!$quote && $d =~ /--/) {
                 $d =~ s/--([a-z0-9.-]+)/manpageify($1, 1)/ge;
@@ -1047,7 +1045,6 @@ sub header {
     printdesc($manpage, 0, @d);
 }
 
-
 sub sourcecategories {
     my ($dir) = @_;
     my %cats;

scripts/mk-ca-bundle.pl

@@ -255,7 +255,6 @@ sub sha256 {
     return $result;
 }
 
-
 sub oldhash {
     my $hash = "";
     open(C, "<$_[0]") || return 0;

scripts/schemetable.c

@@ -35,45 +35,45 @@ struct detail {
 };
 
 static const struct detail scheme[] = {
-  {"dict", "#ifndef CURL_DISABLE_DICT" },
-  {"file", "#ifndef CURL_DISABLE_FILE" },
-  {"ftp", "#ifndef CURL_DISABLE_FTP" },
-  {"ftps", "#if defined(USE_SSL) && !defined(CURL_DISABLE_FTP)" },
-  {"gopher", "#ifndef CURL_DISABLE_GOPHER" },
-  {"gophers", "#if defined(USE_SSL) && !defined(CURL_DISABLE_GOPHER)" },
-  {"http", "#ifndef CURL_DISABLE_HTTP" },
-  {"https", "#if defined(USE_SSL) && !defined(CURL_DISABLE_HTTP)" },
-  {"imap", "#ifndef CURL_DISABLE_IMAP" },
-  {"imaps", "#if defined(USE_SSL) && !defined(CURL_DISABLE_IMAP)" },
-  {"ldap", "#ifndef CURL_DISABLE_LDAP" },
-  {"ldaps", "#if !defined(CURL_DISABLE_LDAP) && \\\n"
-   "  !defined(CURL_DISABLE_LDAPS) && \\\n"
-   "  ((defined(USE_OPENLDAP) && defined(USE_SSL)) || \\\n"
-   "   (!defined(USE_OPENLDAP) && defined(HAVE_LDAP_SSL)))" },
-  {"mqtt", "#ifndef CURL_DISABLE_MQTT" },
-  {"pop3", "#ifndef CURL_DISABLE_POP3" },
-  {"pop3s", "#if defined(USE_SSL) && !defined(CURL_DISABLE_POP3)" },
-  {"rtmp", "#ifdef USE_LIBRTMP" },
-  {"rtmpt", "#ifdef USE_LIBRTMP" },
-  {"rtmpe", "#ifdef USE_LIBRTMP" },
-  {"rtmpte", "#ifdef USE_LIBRTMP" },
-  {"rtmps", "#ifdef USE_LIBRTMP" },
-  {"rtmpts", "#ifdef USE_LIBRTMP" },
-  {"rtsp", "#ifndef CURL_DISABLE_RTSP" },
-  {"scp", "#ifdef USE_SSH" },
-  {"sftp", "#ifdef USE_SSH" },
-  {"smb", "#if !defined(CURL_DISABLE_SMB) && \\\n"
-   "  defined(USE_CURL_NTLM_CORE) && (SIZEOF_CURL_OFF_T > 4)" },
-  {"smbs", "#if defined(USE_SSL) && !defined(CURL_DISABLE_SMB) && \\\n"
-   "  defined(USE_CURL_NTLM_CORE) && (SIZEOF_CURL_OFF_T > 4)" },
-  {"smtp", "#ifndef CURL_DISABLE_SMTP" },
-  {"smtps", "#if defined(USE_SSL) && !defined(CURL_DISABLE_SMTP)" },
-  {"telnet", "#ifndef CURL_DISABLE_TELNET" },
-  {"tftp", "#ifndef CURL_DISABLE_TFTP" },
-  {"ws",
-   "#if !defined(CURL_DISABLE_WEBSOCKETS) && !defined(CURL_DISABLE_HTTP)" },
-  {"wss", "#if !defined(CURL_DISABLE_WEBSOCKETS) && \\\n"
-   "  defined(USE_SSL) && !defined(CURL_DISABLE_HTTP)" },
+  { "dict", "#ifndef CURL_DISABLE_DICT" },
+  { "file", "#ifndef CURL_DISABLE_FILE" },
+  { "ftp", "#ifndef CURL_DISABLE_FTP" },
+  { "ftps", "#if defined(USE_SSL) && !defined(CURL_DISABLE_FTP)" },
+  { "gopher", "#ifndef CURL_DISABLE_GOPHER" },
+  { "gophers", "#if defined(USE_SSL) && !defined(CURL_DISABLE_GOPHER)" },
+  { "http", "#ifndef CURL_DISABLE_HTTP" },
+  { "https", "#if defined(USE_SSL) && !defined(CURL_DISABLE_HTTP)" },
+  { "imap", "#ifndef CURL_DISABLE_IMAP" },
+  { "imaps", "#if defined(USE_SSL) && !defined(CURL_DISABLE_IMAP)" },
+  { "ldap", "#ifndef CURL_DISABLE_LDAP" },
+  { "ldaps", "#if !defined(CURL_DISABLE_LDAP) && \\\n"
+             "  !defined(CURL_DISABLE_LDAPS) && \\\n"
+             "  ((defined(USE_OPENLDAP) && defined(USE_SSL)) || \\\n"
+             "   (!defined(USE_OPENLDAP) && defined(HAVE_LDAP_SSL)))" },
+  { "mqtt", "#ifndef CURL_DISABLE_MQTT" },
+  { "pop3", "#ifndef CURL_DISABLE_POP3" },
+  { "pop3s", "#if defined(USE_SSL) && !defined(CURL_DISABLE_POP3)" },
+  { "rtmp", "#ifdef USE_LIBRTMP" },
+  { "rtmpt", "#ifdef USE_LIBRTMP" },
+  { "rtmpe", "#ifdef USE_LIBRTMP" },
+  { "rtmpte", "#ifdef USE_LIBRTMP" },
+  { "rtmps", "#ifdef USE_LIBRTMP" },
+  { "rtmpts", "#ifdef USE_LIBRTMP" },
+  { "rtsp", "#ifndef CURL_DISABLE_RTSP" },
+  { "scp", "#ifdef USE_SSH" },
+  { "sftp", "#ifdef USE_SSH" },
+  { "smb", "#if !defined(CURL_DISABLE_SMB) && \\\n"
+           "  defined(USE_CURL_NTLM_CORE) && (SIZEOF_CURL_OFF_T > 4)" },
+  { "smbs", "#if defined(USE_SSL) && !defined(CURL_DISABLE_SMB) && \\\n"
+            "  defined(USE_CURL_NTLM_CORE) && (SIZEOF_CURL_OFF_T > 4)" },
+  { "smtp", "#ifndef CURL_DISABLE_SMTP" },
+  { "smtps", "#if defined(USE_SSL) && !defined(CURL_DISABLE_SMTP)" },
+  { "telnet", "#ifndef CURL_DISABLE_TELNET" },
+  { "tftp", "#ifndef CURL_DISABLE_TFTP" },
+  { "ws",
+    "#if !defined(CURL_DISABLE_WEBSOCKETS) && !defined(CURL_DISABLE_HTTP)" },
+  { "wss", "#if !defined(CURL_DISABLE_WEBSOCKETS) && \\\n"
+           "  defined(USE_SSL) && !defined(CURL_DISABLE_HTTP)" },
   { NULL, NULL }
 };
 
@@ -108,7 +108,8 @@ static void showtable(int try, int init, int shift)
          "     s++;\n"
          "     l--;\n"
          "   }\n"
-         "*/\n", init, shift);
+         "*/\n",
+         init, shift);
 
   printf("  static const struct Curl_handler * const protocols[%d] = {", try);
 
@@ -158,10 +159,10 @@ int main(void)
         for(j = 0; j < i; j++) {
 
           if(num[j] == v) {
-            /*
+#if 0
             printf("NOPE: %u is a dupe (%s and %s)\n",
                    v, scheme[i], scheme[j]);
-            */
+#endif
             badcombo = 1;
             break;
           }