feat(gen_help_html.lua): remove old AWK scripts

These files are no longer needed since gen_help_html.lua is working
fairly well.

ref https://github.com/neovim/neovim/pull/11967

4 files changed, 3 insertions, 871 deletions

diff --git a/runtime/CMakeLists.txt b/runtime/CMakeLists.txt
index b42b1de54b..6b926e9fc1 100644
--- a/runtime/CMakeLists.txt
+++ b/runtime/CMakeLists.txt
@@ -75,8 +75,10 @@ add_custom_command(OUTPUT ${GENERATED_HELP_TAGS}
 )
 
 
+# TODO: This doesn't work. wait for "nvim -l" to land?
 add_custom_target(doc_html
-  COMMAND make html
+  COMMAND "${PROJECT_BINARY_DIR}/bin/nvim"
+    -V1 -es --clean -c "lua require('scripts.gen_help_html').gen('./build/runtime/doc', './build/doc_html', nil, 'todo_commit_id')" -c "0cq"
   DEPENDS
     ${GENERATED_HELP_TAGS}
   WORKING_DIRECTORY "${GENERATED_RUNTIME_DIR}/doc"
diff --git a/runtime/doc/Makefile b/runtime/doc/Makefile
deleted file mode 100644
index 18d32c0820..0000000000
--- a/runtime/doc/Makefile
+++ /dev/null
@@ -1,40 +0,0 @@
-#
-# Makefile for the Vim documentation on Unix
-#
-# If you get "don't know how to make scratch", first run make in the source
-# directory.  Or remove the include below.
-
-AWK = awk
-
-DOCS = $(wildcard *.txt)
-HTMLS = $(DOCS:.txt=.html)
-
-.SUFFIXES:
-.SUFFIXES: .c .o .txt .html
-
-# Awk version of .txt to .html conversion.
-html: noerrors vimindex.html $(HTMLS)
-	@if test -f errors.log; then cat errors.log; fi
-
-noerrors:
-	-rm -f errors.log
-
-$(HTMLS): tags.ref
-
-.txt.html:
-	$(AWK) -f makehtml.awk $< >$@
-
-# index.html is the starting point for HTML, but for the help files it is
-# help.txt.  Therefore use vimindex.html for index.txt.
-index.html: help.txt
-	$(AWK) -f makehtml.awk help.txt >index.html
-
-vimindex.html: index.txt
-	$(AWK) -f makehtml.awk index.txt >vimindex.html
-
-tags.ref tags.html: tags
-	$(AWK) -f maketags.awk tags >tags.html
-
-clean:
-	-rm -f *.html tags.ref $(HTMLS) errors.log tags
-
diff --git a/runtime/doc/makehtml.awk b/runtime/doc/makehtml.awk
deleted file mode 100644
index 50f5611fa7..0000000000
--- a/runtime/doc/makehtml.awk
+++ /dev/null
@@ -1,788 +0,0 @@
-BEGIN   {
-	# some initialization variables
-	asciiart="no";
-	wasset="no";
-	lineset=0;
-	sample="no";
-	while ( getline ti <"tags.ref" > 0 ) {
-		nf=split(ti,tag,"	");
-		# as help.txt renders into index.html and index.txt -> vimindex.html,
-		# this hack is needed to get the links right to those pages.
-		if ( tag[2] == "index.txt" ) {
-			tag[2] = "vimindex.txt"
-		} else if ( tag[2]  == "help.txt" ) {
-			tag[2] = "index.txt"
-		}
-		tagkey[tag[1]]="yes";tagref[tag[1]]=tag[2];
-	}
-	skip_word["and"]="yes";
-	skip_word["backspace"]="yes";
-	skip_word["beep"]="yes";
-	skip_word["bugs"]="yes";
-	skip_word["da"]="yes";
-	skip_word["end"]="yes";
-	skip_word["ftp"]="yes";
-	skip_word["go"]="yes";
-	skip_word["help"]="yes";
-	skip_word["home"]="yes";
-	skip_word["news"]="yes";
-	skip_word["index"]="yes";
-	skip_word["insert"]="yes";
-	skip_word["into"]="yes";
-	skip_word["put"]="yes";
-	skip_word["reference"]="yes";
-	skip_word["section"]="yes";
-	skip_word["space"]="yes";
-	skip_word["starting"]="yes";
-	skip_word["toggle"]="yes";
-	skip_word["various"]="yes";
-	skip_word["version"]="yes";
-	skip_word["is"]="yes";
-}
-#
-# protect special chars
-#
-/[><&á]/ {gsub(/&/,"\\&amp;");gsub(/>/,"\\&gt;");gsub(/</,"\\&lt;");gsub("á","\\&aacute;");}
-#
-# end of sample lines by non-blank in first column
-#
-sample == "yes" && substr($0,1,4) == "&lt;" { sample = "no"; gsub(/^&lt;/, " "); }
-sample == "yes" && substr($0,1,1) != " " && substr($0,1,1) != "	" && length($0) > 0 { sample = "no" }
-#
-# sample lines printed bold unless empty...
-#
-sample == "yes" && $0 =="" { print ""; next; }
-sample == "yes" && $0 !="" { print "<B>" $0 "</B>"; next; }
-#
-# start of sample lines in next line
-#
-$0 == "&gt;" { sample = "yes"; print ""; next; }
-substr($0,length($0)-4,5) == " &gt;" { sample = "yes"; gsub(/ &gt;$/, ""); }
-#
-# header lines printed bold, colored
-#
-substr($0,length($0),1) == "~" { print "<B><FONT COLOR=\"PURPLE\">" substr($0,1,length($0)-1) "</FONT></B>"; next; }
-#
-#ad hoc code
-#
-/^"\|& / {gsub(/\|/,"\\&#124;"); }
-/ = b / {gsub(/ b /," \\&#98; "); }
-#
-# one letter tag
-#
-/[ 	]\*.\*[ 	]/ {gsub(/\*/,"ZWWZ"); }
-#
-# isolated "*"
-#
-/[ 	]\*[ 	]/ {gsub(/ \* /," \\&#42; ");
-		    gsub(/ \*	/," \\&#42;	");
-		    gsub(/	\* /,"	\\&#42; ");
-		    gsub(/	\*	/,"	\\&#42;	"); }
-#
-# tag start
-#
-/[ 	]\*[^ 	]/	{gsub(/ \*/," ZWWZ");gsub(/	\*/,"	ZWWZ");}
-/^\*[^ 	]/ 	 {gsub(/^\*/,"ZWWZ");}
-#
-# tag end
-#
-/[^ 	]\*$/ 	 {gsub(/\*$/,"ZWWZ");}
-/[^ \/	]\*[ 	]/  {gsub(/\*/,"ZWWZ");}
-#
-# isolated "|"
-#
-/[ 	]\|[ 	]/ {gsub(/ \| /," \\&#124; ");
-		    gsub(/ \|	/," \\&#124;	");
-		    gsub(/	\| /,"	\\&#124; ");
-		    gsub(/	\|	/,"	\\&#124;	"); }
-/'\|'/ { gsub(/'\|'/,"'\\&#124;'"); }
-/\^V\|/ {gsub(/\^V\|/,"^V\\&#124;");}
-/ \\\|	/ {gsub(/\|/,"\\&#124;");}
-#
-# one letter pipes and "||" false pipe (digraphs)
-#
-/[ 	]\|.\|[ 	]/ && asciiart == "no" {gsub(/\|/,"YXXY"); }
-/^\|.\|[ 	]/ {gsub(/\|/,"YXXY"); }
-/\|\|/ {gsub(/\|\|/,"\\&#124;\\&#124;"); }
-/^shellpipe/ {gsub(/\|/,"\\&#124;"); }
-#
-# pipe start
-#
-/[ 	]\|[^ 	]/ && asciiart == "no"	{gsub(/ \|/," YXXY");
-			gsub(/	\|/,"	YXXY");}
-/^\|[^ 	]/ 	 {gsub(/^\|/,"YXXY");}
-#
-# pipe end
-#
-/[^ 	]\|$/ && asciiart == "no" {gsub(/\|$/,"YXXY");}
-/[^ 	]\|[s ,.);	]/ && asciiart == "no" {gsub(/\|/,"YXXY");}
-/[^ 	]\|]/ && asciiart == "no" {gsub(/\|/,"YXXY");}
-#
-# various
-#
-/'"/ 	{gsub(/'"/,"\\&#39;\\&#34;'");}
-/"/	{gsub(/"/,"\\&quot;");}
-/%/	{gsub(/%/,"\\&#37;");}
-
-NR == 1 { nf=split(FILENAME,f,".")
-	print "<HTML>";
-
-	print "<HEAD>"
-	if ( FILENAME == "mbyte.txt" ) {
-	    # needs utf-8 as uses many languages
-	    print "<META HTTP-EQUIV=\"Content-type\" content=\"text/html; charset=UTF-8\">";
-	} else {
-	    # common case - Latin1
-	    print "<META HTTP-EQUIV=\"Content-type\" content=\"text/html; charset=ISO-8859-1\">";
-	}
-	print "<TITLE>Nvim documentation: " f[1] "</TITLE>";
-	print "</HEAD>";
-
-	print "<BODY BGCOLOR=\"#ffffff\">";
-	print "<H1>Nvim documentation: " f[1] "</H1>";
-	print "<A NAME=\"top\"></A>";
-	if ( FILENAME != "help.txt" ) {
-	  print "<A HREF=\"index.html\">main help file</A>\n";
-	}
-	print "<HR>";
-	print "<PRE>";
-	filename=f[1]".html";
-}
-
-# set to a low value to test for few lines of text
-# NR == 99999 { exit; }
-
-# ignore underlines and tags
-substr($0,1,5) == " vim:" { next; }
-substr($0,1,4) == "vim:" { next; }
-# keep just whole lines of "-", "="
-substr($0,1,3) == "===" && substr($0,75,1) != "=" { next; }
-substr($0,1,3) == "---" && substr($0,75,1) != "-" { next; }
-
-{
-	nstar = split($0,s,"ZWWZ");
-	for ( i=2 ; i <= nstar ; i=i+2 ) {
-		nbla=split(s[i],blata,"[ 	]");
-		if ( nbla > 1 ) {
-			gsub("ZWWZ","*");
-			nstar = split($0,s,"ZWWZ");
-		}
-	}
-	npipe = split($0,p,"YXXY");
-	for ( i=2 ; i <= npipe ; i=i+2 ) {
-		nbla=split(p[i],blata,"[ 	]");
-		if ( nbla > 1 ) {
-			gsub("YXXY","|");
-			ntabs = split($0,p,"YXXY");
-		}
-	}
-}
-
-
-FILENAME == "gui.txt" && asciiart == "no"  \
-	  && $0 ~ /\+----/ && $0 ~ /----\+/ {
-	asciiart= "yes";
-	asciicnt=0;
-	}
-
-FILENAME == "usr_20.txt" && asciiart == "no" \
-	  && $0 ~ /an empty line at the end:/ {
-	asciiart= "yes";
-	asciicnt=0;
-	}
-
-asciiart == "yes" && $0=="" { asciicnt++; }
-
-asciiart == "yes" && asciicnt == 2 { asciiart = "no"; }
-
-asciiart == "yes" { npipe = 1; }
-#	{ print NR " <=> " asciiart; }
-
-#
-# line contains  "*"
-#
-nstar > 2 && npipe < 3 {
-	printf("\n");
-	for ( i=1; i <= nstar ; i=i+2 ) {
-		this=s[i];
-		put_this();
-		ii=i+1;
-		nbla = split(s[ii],blata," ");
-		if ( ii <= nstar ) {
-			if ( nbla == 1 && substr(s[ii],length(s[ii]),1) != " " ) {
-			printf("*<A NAME=\"%s\"></A>",s[ii]);
-				printf("<B>%s</B>*",s[ii]);
-			} else {
-			printf("*%s*",s[ii]);
-			}
-		}
-	}
-	printf("\n");
-	next;
-	}
-#
-# line contains "|"
-#
-npipe > 2 && nstar < 3 {
-	if  ( npipe%2 == 0 ) {
-		for ( i=1; i < npipe ; i++ ) {
-			gsub("ZWWZ","*",p[i]);
-			printf("%s|",p[i]);
-		}
-		printf("%s\n",p[npipe]);
-		next;
-		}
-	for ( i=1; i <= npipe ; i++ )
-		{
-		if ( i % 2 == 1 ) {
-			gsub("ZWWZ","*",p[i]);
-			this=p[i];
-			put_this();
-			}
-			else {
-			nfn=split(p[i],f,".");
-			if ( nfn == 1 || f[2] == "" || f[1] == "" || length(f[2]) < 3 ) {
-				find_tag1();
-				}
-				else {
-					if ( f[1] == "index" ) {
-		printf "|<A HREF=\"vimindex.html\">" p[i] "</A>|";
-					} else {
-						if ( f[1] == "help" ) {
-		printf "|<A HREF=\"index.html\">" p[i] "</A>|";
-						} else {
-		printf "|<A HREF=\"" f[1] ".html\">" p[i] "</A>|";
-						}
-					}
-				}
-			}
-		}
-		printf("\n");
-		next;
-	}
-#
-# line contains both "|" and "*"
-#
-npipe > 2 && nstar > 2 {
-	printf("\n");
-	for ( j=1; j <= nstar ; j=j+2 ) {
-		npipe = split(s[j],p,"YXXY");
-		if ( npipe > 1 ) {
-			for ( np=1; np<=npipe; np=np+2 ) {
-				this=p[np];
-				put_this();
-				i=np+1;find_tag1();
-			}
-		} else {
-			this=s[j];
-			put_this();
-		}
-		jj=j+1;
-		nbla = split(s[jj],blata," ");
-		if ( jj <= nstar && nbla == 1 && s[jj] != "" ) {
-		printf("*<A NAME=\"%s\"></A>",s[jj]);
-			printf("<B>%s</B>*",s[jj]);
-		} else {
-			if ( s[jj] != "" ) {
-			printf("*%s*",s[jj]);
-			}
-		}
-	}
-	printf("\n");
-	next;
-	}
-#
-# line contains e-mail address john.doe@some.place.edu
-#
-$0 ~ /@/ && $0 ~ /[a-zA-Z0-9]@[a-z]/ \
-	{
-	nemail=split($0,em," ");
-	if ( substr($0,1,1) == "	" ) { printf("	"); }
-	for ( i=1; i <= nemail; i++ ) {
-		if ( em[i] ~ /@/ ) {
-			if ( substr(em[i],2,3) == "lt;" && substr(em[i],length(em[i])-2,3) == "gt;" ) {
-				mailaddr=substr(em[i],5,length(em[i])-8);
-				printf("<A HREF=\"mailto:%s\">&lt;%s&gt;</A> ",mailaddr,mailaddr);
-			} else {
-				if ( substr(em[i],2,3) == "lt;" && substr(em[i],length(em[i])-3,3) == "gt;" ) {
-					mailaddr=substr(em[i],5,length(em[i])-9);
-					printf("<A HREF=\"mailto:%s\">&lt;%s&gt;</A>%s ",mailaddr,mailaddr,substr(em[i],length(em[i]),1));
-				} else {
-					printf("<A HREF=\"mailto:%s\">%s</A> ",em[i],em[i]);
-				}
-			}
-		} else {
-				printf("%s ",em[i]);
-		}
-	}
-	#print "*** " NR " " FILENAME " - possible mail ref";
-	printf("\n");
-	next;
-	}
-#
-# line contains http / ftp reference
-#
-$0 ~ /http:\/\// || $0 ~ /ftp:\/\// {
-	gsub("URL:","");
-	gsub("&lt;","");
-	gsub("&gt;","");
-	gsub("\\(","");
-	gsub("\\)","");
-	nemail=split($0,em," ");
-	for ( i=1; i <= nemail; i++ ) {
-		if ( substr(em[i],1,5) == "http:" ||
-	     	substr(em[i],1,4) == "ftp:" ) {
-			if ( substr(em[i],length(em[i]),1) != "." ) {
-				printf("	<A HREF=\"%s\">%s</A>",em[i],em[i]);
-			} else {
-				em[i]=substr(em[i],1,length(em[i])-1);
-				printf("	<A HREF=\"%s\">%s</A>.",em[i],em[i]);
-			}
-		} else {
-		printf(" %s",em[i]);
-		}
-	}
-	#print "*** " NR " " FILENAME " - possible http ref";
-	printf("\n");
-	next;
-	}
-#
-# some lines contains just one "almost regular" "*"...
-#
-nstar == 2  {
-	this=s[1];
-	put_this();
-	printf("*");
-	this=s[2];
-	put_this();
-	printf("\n");
-	next;
-	}
-#
-# regular line
-#
-	{ ntabs = split($0,tb,"	");
-	for ( i=1; i < ntabs ; i++) {
-		this=tb[i];
-		put_this();
-		printf("	");
-		}
-	this=tb[ntabs];
-	put_this();
-	printf("\n");
-	}
-
-
-asciiart == "yes"  && $0 ~ /\+-\+--/  \
-	&& $0 ~ "scrollbar" { asciiart = "no"; }
-
-END {
-	topback();
-	print "</PRE>\n</BODY>\n\n\n</HTML>"; }
-
-#
-# as main we keep index.txt (by default)
-#
-function topback () {
-	if ( FILENAME != "tags" ) {
-	if ( FILENAME != "help.txt" ) {
-	printf("<A HREF=\"#top\">top</A> - ");
-	printf("<A HREF=\"index.html\">main help file</A>\n");
-	} else {
-	printf("<A HREF=\"#top\">top</A>\n");
-	}
-	}
-}
-
-function find_tag1() {
-	if ( p[i] == "" ) { return; }
-	if ( tagkey[p[i]] == "yes" ) {
-		which=tagref[p[i]];
-		put_href();
-		return;
-	}
-	# if not found, then we have a problem
-	print "============================================"  >>"errors.log";
-	print FILENAME ", line " NR ", pointer: >>" p[i] "<<" >>"errors.log";
-	print $0 >>"errors.log";
-	which="intro.html";
-	put_href();
-}
-
-function see_tag() {
-# ad-hoc code:
-if ( atag == "\"--" || atag == "--\"" ) { return; }
-if_already();
-if ( already == "yes" ) {
-	printf("%s",aword);
-	return;
-	}
-allow_one_char="no";
-find_tag2();
-if ( done == "yes" ) { return; }
-rightchar=substr(atag,length(atag),1);
-if (    rightchar == "." \
-     || rightchar == "," \
-     || rightchar == ":" \
-     || rightchar == ";" \
-     || rightchar == "!" \
-     || rightchar == "?" \
-     || rightchar == ")" ) {
-	atag=substr(atag,1,length(atag)-1);
-	if_already();
-	if ( already == "yes" ) {
-		printf("%s",aword);
-		return;
-	}
-	find_tag2();
-	if ( done == "yes" ) { printf("%s",rightchar);return; }
-	leftchar=substr(atag,1,1);
-	lastbut1=substr(atag,length(atag),1);
-	if (    leftchar == "'" && lastbut1 == "'"  ) {
-		allow_one_char="yes";
-		atag=substr(atag,2,length(atag)-2);
-		if_already();
-		if ( already == "yes" ) {
-			printf("%s",aword);
-			return;
-		}
-		printf("%s",leftchar);
-		aword=substr(atag,1,length(atag))""lastbut1""rightchar;
-		find_tag2();
-		if ( done == "yes" ) { printf("%s%s",lastbut1,rightchar);return; }
-		}
-	}
-atag=aword;
-leftchar=substr(atag,1,1);
-if (    leftchar == "'" && rightchar == "'"  ) {
-	allow_one_char="yes";
-	atag=substr(atag,2,length(atag)-2);
-	if  ( atag == "<" ) { printf(" |%s|%s| ",atag,p[2]); }
-	if_already();
-	if ( already == "yes" ) {
-		printf("%s",aword);
-		return;
-		}
-	printf("%s",leftchar);
-	find_tag2();
-	if ( done == "yes" ) { printf("%s",rightchar);return; }
-	printf("%s%s",atag,rightchar);
-	return;
-	}
-last2=substr(atag,length(atag)-1,2);
-first2=substr(atag,1,2);
-if (    first2 == "('" && last2 == "')"  ) {
-	allow_one_char="yes";
-	atag=substr(atag,3,length(atag)-4);
-	if_already();
-	if ( already == "yes" ) {
-		printf("%s",aword);
-		return;
-		}
-	printf("%s",first2);
-	find_tag2();
-	if ( done == "yes" ) { printf("%s",last2);return; }
-	printf("%s%s",atag,last2);
-	return;
-	}
-if ( last2 == ".)" ) {
-	atag=substr(atag,1,length(atag)-2);
-	if_already();
-	if ( already == "yes" ) {
-		printf("%s",aword);
-		return;
-		}
-	find_tag2();
-	if ( done == "yes" ) { printf("%s",last2);return; }
-	printf("%s%s",atag,last2);
-	return;
-	}
-if ( last2 == ")." ) {
-	atag=substr(atag,1,length(atag)-2);
-	find_tag2();
-	if_already();
-	if ( already == "yes" ) {
-		printf("%s",aword);
-		return;
-		}
-	if ( done == "yes" ) { printf("%s",last2);return; }
-	printf("%s%s",atag,last2);
-	return;
-	}
-first6=substr(atag,1,6);
-last6=substr(atag,length(atag)-5,6);
-if ( last6 == atag ) {
-	printf("%s",aword);
-	return;
-	}
-last6of7=substr(atag,length(atag)-6,6);
-if ( first6 == "&quot;" && last6of7 == "&quot;" && length(atag) > 12 ) {
-	allow_one_char="yes";
-	atag=substr(atag,7,length(atag)-13);
-	if_already();
-	if ( already == "yes" ) {
-		printf("%s",aword);
-		return;
-		}
-	printf("%s",first6);
-	find_tag2();
-	if ( done == "yes" ) { printf("&quot;%s",rightchar); return; }
-	printf("%s&quot;%s",atag,rightchar);
-	return;
-	}
-if ( first6 == "&quot;" && last6 != "&quot;" ) {
-	allow_one_char="yes";
-	atag=substr(atag,7,length(atag)-6);
-	if ( atag == "[" ) { printf("&quot;%s",atag); return; }
-	if ( atag == "." ) { printf("&quot;%s",atag); return; }
-	if ( atag == ":" ) { printf("&quot;%s",atag); return; }
-	if ( atag == "a" ) { printf("&quot;%s",atag); return; }
-	if ( atag == "A" ) { printf("&quot;%s",atag); return; }
-	if ( atag == "g" ) { printf("&quot;%s",atag); return; }
-	if_already();
-	if ( already == "yes" ) {
-		printf("&quot;%s",atag);
-		return;
-		}
-	printf("%s",first6);
-	find_tag2();
-	if ( done == "yes" ) { return; }
-	printf("%s",atag);
-	return;
-	}
-if ( last6 == "&quot;" && first6 == "&quot;" ) {
-	allow_one_char="yes";
-	atag=substr(atag,7,length(atag)-12);
-	if_already();
-	if ( already == "yes" ) {
-		printf("%s",aword);
-		return;
-		}
-	printf("%s",first6);
-	find_tag2();
-	if ( done == "yes" ) { printf("%s",last6);return; }
-	printf("%s%s",atag,last6);
-	return;
-	}
-last6of7=substr(atag,length(atag)-6,6);
-if ( last6of7 == "&quot;" && first6 == "&quot;" ) {
-	allow_one_char="yes";
-	atag=substr(atag,7,length(atag)-13);
-	#printf("\natag=%s,aword=%s\n",atag,aword);
-	if_already();
-	if ( already == "yes" ) {
-		printf("%s",aword);
-		return;
-		}
-	printf("%s",first6);
-	find_tag2();
-	if ( done == "yes" ) { printf("%s%s",last6of7,rightchar);return; }
-	printf("%s%s%s",atag,last6of7,rightchar);
-	return;
-	}
-printf("%s",aword);
-}
-
-function find_tag2() {
-	done="no";
-	# no blanks present in a tag...
-	ntags=split(atag,blata,"[ 	]");
-	if ( ntags > 1 ) { return; }
-	if 	( ( allow_one_char == "no" ) && \
-		  ( index("!#$%&'()+,-./0:;=?@ACINX\\[\\]^_`at\\{\\}~",atag) !=0 ) ) {
-		return;
-	}
-	if ( skip_word[atag] == "yes" ) { return; }
-	if ( wasset == "yes" && lineset == NR ) {
-	wasset="no";
-	see_opt();
-	if ( done_opt == "yes" ) {return;}
-	}
-	if ( wasset == "yes" && lineset != NR ) {
-	wasset="no";
-	}
-	if ( atag == ":set" ) {
-	wasset="yes";
-	lineset=NR;
-	}
-	if ( tagkey[atag] == "yes" ) {
-		which=tagref[atag];
-		put_href2();
-		done="yes";
-	}
-}
-
-function find_tag3() {
-	done="no";
-	# no blanks present in a tag...
-	ntags=split(btag,blata,"[ 	]");
-	if ( ntags > 1 ) { return; }
-	if 	( ( allow_one_char == "no" ) && \
-		  ( index("!#$%&'()+,-./0:;=?@ACINX\\[\\]^_`at\\{\\}~",btag) !=0 ) ) {
-	  	return;
-	}
-	if ( skip_word[btag] == "yes" ) { return; }
-	if ( tagkey[btag] == "yes" ) {
-		which=tagref[btag];
-		put_href3();
-		done="yes";
-	}
-}
-
-function put_href() {
-	if ( p[i] == "" ) { return; }
-	if ( which == FILENAME ) {
-		printf("|<A HREF=\"#%s\">%s</A>|",p[i],p[i]);
-		}
-		else {
-		nz=split(which,zz,".");
-		if ( zz[2] == "txt" || zz[1] == "tags" ) {
-		printf("|<A HREF=\"%s.html#%s\">%s</A>|",zz[1],p[i],p[i]);
-		}
-		else {
-		printf("|<A HREF=\"intro.html#%s\">%s</A>|",p[i],p[i]);
-		}
-	}
-}
-
-function put_href2() {
-	if ( atag == "" ) { return; }
-	if ( which == FILENAME ) {
-		printf("<A HREF=\"#%s\">%s</A>",atag,atag);
-		}
-		else {
-		nz=split(which,zz,".");
-		if ( zz[2] == "txt" || zz[1] == "tags" ) {
-		printf("<A HREF=\"%s.html#%s\">%s</A>",zz[1],atag,atag);
-		}
-		else {
-		printf("<A HREF=\"intro.html#%s\">%s</A>",atag,atag);
-		}
-	}
-}
-
-function put_href3() {
-	if ( btag == "" ) { return; }
-	if ( which == FILENAME ) {
-		printf("<A HREF=\"#%s\">%s</A>",btag,btag2);
-		}
-		else {
-		nz=split(which,zz,".");
-		if ( zz[2] == "txt" || zz[1] == "tags" ) {
-		printf("<A HREF=\"%s.html#%s\">%s</A>",zz[1],btag,btag2);
-		}
-		else {
-		printf("<A HREF=\"intro.html#%s\">%s</A>",btag,btag2);
-		}
-	}
-}
-
-function put_this() {
-	ntab=split(this,ta,"	");
-	for ( nta=1 ; nta <= ntab ; nta++ ) {
-		ata=ta[nta];
-		lata=length(ata);
-		aword="";
-		for ( iata=1 ; iata <=lata ; iata++ ) {
-			achar=substr(ata,iata,1);
-			if ( achar != " " ) { aword=aword""achar; }
-			else {
-				if ( aword != "" ) { atag=aword;
-					see_tag();
-					aword="";
-					printf(" "); }
-				else	{
-					printf(" ");
-					}
-			}
-		}
-		if ( aword != "" ) { atag=aword;
-					see_tag();
-					}
-		if ( nta != ntab ) { printf("	"); }
-	}
-}
-
-function if_already() {
-	already="no";
-	if  ( npipe < 2 ) { return; }
-	if  ( atag == ":au" && p[2] == ":autocmd" ) { already="yes";return; }
-	for ( npp=2 ; npp <= npipe ; npp=npp+2 ) {
-		if 	(  (  (index(p[npp],atag)) != 0 \
-			      && length(p[npp]) > length(atag) \
-			      && length(atag) >= 1  \
-			    ) \
-			    || (p[npp] == atag) \
-			) {
-		# printf("p=|%s|,tag=|%s| ",p[npp],atag);
-		already="yes"; return; }
-	}
-}
-
-function see_opt() {
-	done_opt="no";
-	stag=atag;
-	nfields = split(atag,tae,"=");
-	if ( nfields > 1 )  {
-		btag="'"tae[1]"'";
-		btag2=tae[1];
-	    find_tag3();
-		if (done == "yes") {
-			for ( ntae=2 ; ntae <= nfields ; ntae++ ) {
-				printf("=%s",tae[ntae]);
-			}
-			atag=stag;
-			done_opt="yes";
-			return;
-		}
-		btag=tae[1];
-		btag2=tae[1];
-	    find_tag3();
-		if ( done=="yes" ) {
-			for ( ntae=2 ; ntae <= nfields ; ntae++ ) {
-				printf("=%s",tae[ntae]);
-			}
-			atag=stag;
-			done_opt="yes";
-			return;
-		}
-	}
-	nfields = split(atag,tae,"&quot;");
-	if ( nfields > 1 )  {
-		btag="'"tae[1]"'";
-		btag2=tae[1];
-	   	find_tag3();
-		if (done == "yes") {
-			printf("&quot;");
-			atag=stag;
-			done_opt="yes";
-			return;
-		}
-		btag=tae[1];
-		btag2=tae[1];
-	    find_tag3();
-		if (done == "yes") {
-			printf("&quot;");
-			atag=stag;
-			done_opt="yes";
-			return;
-		}
-	}
-	btag="'"tae[1]"'";
-	btag2=tae[1];
-	find_tag3();
-	if (done == "yes") {
-		atag=stag;
-		done_opt="yes";
-		return;
-	}
-	btag=tae[1];
-	btag2=tae[1];
-	find_tag3();
-	if (done == "yes") {
-		atag=stag;
-		done_opt="yes";
-		return;
-	}
-	atag=stag;
-}
diff --git a/runtime/doc/maketags.awk b/runtime/doc/maketags.awk
deleted file mode 100644
index c6b2cd91f3..0000000000
--- a/runtime/doc/maketags.awk
+++ /dev/null
@@ -1,42 +0,0 @@
-BEGIN   { FS="	"; }
-
-NR == 1 { nf=split(FILENAME,f,".")
-	print "<HTML>";
-	print "<HEAD><TITLE>" f[1] "</TITLE></HEAD>";
-	print "<BODY BGCOLOR=\"#ffffff\">";
-	print "<H1>Vim Documentation: " f[1] "</H1>";
-	print "<A NAME=\"top\"></A>";
-	print "<HR>";
-	print "<PRE>";
-}
-
-{
-	#
-	# protect special chars
-	#
-	gsub(/&/,"\\&amp;");
-	gsub(/>/,"\\&gt;");
-	gsub(/</,"\\&lt;");
-	gsub(/"/,"\\&quot;");
-	gsub(/%/,"\\&#37;");
-
-	nf=split($0,tag,"	");
-	tagkey[t]=tag[1];tagref[t]=tag[2];tagnum[t]=NR;
-	print $1 "	" $2 "	line " NR >"tags.ref"
-	n=split($2,w,".");
-	printf ("|<A HREF=\"%s.html#%s\">%s</A>|	%s\n",w[1],$1,$1,$2);
-}
-
-END     {
-	topback();
-	print "</PRE>\n</BODY>\n\n\n</HTML>";
-	}
-
-#
-# as main we keep index.txt (by default)
-# other candidate, help.txt
-#
-function topback () {
-	printf("<A HREF=\"#top\">top</A> - ");
-	printf("<A HREF=\"help.html\">back to help</A>\n");
-}