-E option now represents html url extension

This is useful for URL rewriting. The -E option was previously used to denote an
empty -e and can still be done with `-e ''`. To use a URL rewriting scheme that
removes the extension, use -E ''.

To support this change properly, and to support users who may not want to use
`.' as their extension prefix, it is no longer automatically added.

(This breaks backwards compatibility, but -E was pushed publically so recently
that this change is likely to affect anyone but, well, me.)

processor

@@ -34,13 +34,12 @@ outfgen()
 {
   ts="${1?Missing timestamp}"
   id="${2?Missing commit id}"
-  ext="${3:+.$3}"
 
   dateout="$( ./tsdate "$ts" %Y-%m-%d )"
   month="$( ./tsdate "$ts" %m )"
   year="${dateout%%-*}"
 
-  echo "$year/$month/$id$ext"
+  echo "$year/$month/$id"
 }
 
 
@@ -82,7 +81,9 @@ do-index()
     lastyear="${lastyear:-$year}"
     firstyear="$year"
 
-    pagefile="$( outfgen "$ts" "$id" "$html_ext" )"
+    pagefile_base="$( outfgen "$ts" "$id" )"
+    pagefile_url="$pagefile_base$html_url_ext"
+    pagefile="$pagefile_base$html_ext"
     fmtsubject="$( "$msgfmt" -P < <( echo "$subject"; echo ) )"
 
     [ "$prevdate" == "$dategroup" ] || {
@@ -90,7 +91,7 @@ do-index()
       $headout "$dategroup"
     }
 
-    $lineout "$day" "$pagefile" "$fmtsubject"
+    $lineout "$day" "$pagefile_url" "$fmtsubject"
 
     prevdate="$dategroup"
 
@@ -107,7 +108,7 @@ do-index()
         # invoke template
         "$repotype"/commit2html "$commit" | apply-template commit
       ) > "$path_out/$pagefile" \
-      && ./hashcache "$hash" "$pagefile" "$subject"
+      && ./hashcache "$hash" "$pagefile_url" "$subject"
   done
 
   $footout

repo2html

@@ -89,14 +89,15 @@ cfgpath="$path_tpl/.config"
 }
 
 # some initial defaults
-html_ext="${html_ext:-.html}"
+export html_ext="${html_ext-.html}"
+export html_link_ext="${html_link_ext-.html}"
 do_raw=
 raw_tpl=
 
 # configuration (note that this setup in conjunction with the below defaults
 # imply that they can be passed in as environment variables as an alternative to
 # options)
-while getopts t:d:c:e:l:f:i:o:u:C:ER:T:U: opt; do
+while getopts t:d:c:e:l:f:i:o:u:C:E:R:T:U: opt; do
   case "$opt" in
     t) title="$OPTARG";;
     d) desc="$OPTARG";;
@@ -119,7 +120,7 @@ while getopts t:d:c:e:l:f:i:o:u:C:ER:T:U: opt; do
     u) repo_url="$OPTARG";;
     U) repo_commit_url="$OPTARG";;
     C) html_external_css="$OPTARG";;
-    E) html_ext=;;
+    E) html_link_ext="$OPTARG";;
     R) rss_count="$OPTARG";;
     T) ;; #already handled
     ?) exit 64;;
@@ -147,7 +148,7 @@ msgfmt="${msgfmt:-$default}"
 # make configuration available to all scripts
 export title desc copyright license msgfmt url_root path_tpl path \
   html_external_css html_footer html_index_footer html_commit_footer \
-  html_ext html_pre_index html_body_class html_tsep repo_url repo_commit_url
+  html_pre_index html_body_class html_tsep repo_url repo_commit_url
 
 # if raw processing was requested, then we are done; pass the torch
 test $do_raw && {