{ "default-skin",           CONFIGSET_SKIN },
  { "logo-mimetype",          CONFIGSET_SKIN },
  { "logo-image",             CONFIGSET_SKIN },
  { "background-mimetype",    CONFIGSET_SKIN },
  { "background-image",       CONFIGSET_SKIN },
  { "icon-mimetype",          CONFIGSET_SKIN },
  { "icon-image",             CONFIGSET_SKIN },
  { "timeline-block-markup",  CONFIGSET_SKIN },
  { "timeline-date-format",   CONFIGSET_SKIN },
  { "timeline-default-style", CONFIGSET_SKIN },
  { "timeline-dwelltime",     CONFIGSET_SKIN },
  { "timeline-closetime",     CONFIGSET_SKIN },
  { "timeline-hard-newlines", CONFIGSET_SKIN },
  { "timeline-max-comment",   CONFIGSET_SKIN },
  { "timeline-plaintext",     CONFIGSET_SKIN },

{ "default-skin",           CONFIGSET_SKIN },
{ "logo-mimetype",          CONFIGSET_SKIN },
{ "logo-image",             CONFIGSET_SKIN },
{ "background-mimetype",    CONFIGSET_SKIN },
{ "background-image",       CONFIGSET_SKIN },
{ "icon-mimetype",          CONFIGSET_SKIN },
{ "icon-image",             CONFIGSET_SKIN },
{ "timeline-block-markup",  CONFIGSET_SKIN },
{ "timeline-date-format",   CONFIGSET_SKIN },
{ "timeline-default-style", CONFIGSET_SKIN },
{ "timeline-dwelltime",     CONFIGSET_SKIN },
{ "timeline-closetime",     CONFIGSET_SKIN },
{ "timeline-hard-newlines", CONFIGSET_SKIN },
{ "timeline-max-comment",   CONFIGSET_SKIN },
{ "timeline-plaintext",     CONFIGSET_SKIN },

** SETTING: timeline-plaintext         boolean default=off
**
** If enabled, no wiki-formatting is done for timeline comment messages.
** Hyperlinks are activated, but they show up on screen using the 
** complete input text, not just the display text.  No other formatting
** is done.
*/
/*
** SETTING: timeline-block-markup      boolean default=off
**
** If enabled, block markup (paragraph brakes, tables, lists, headings, etc)
** is enabled while rendering check-in comment message on the timeline.
** This is disabled by default, because the timeline works best if the
** check-in comments are short and do not take up too much vertical space.
*/
/*
** SETTING: timeline-hard-newlines     boolean default=off
**
** If enabled, the timeline honors newline characters in check-in comments.
** In other words, newlines are coverted into <br> for HTML display.
** The default behavior, when this setting is off, is that newlines are
** treated like any other whitespace character.
*/

/*
** Return an appropriate set of flags for wiki_convert() for displaying
** comments on a timeline.  These flag settings are determined by
** configuration parameters.
**
** The altForm2 argument is true for "%!W" (with the "!" alternate-form-2
** flags) and is false for plain "%W".  The ! indicates that the text is

** to be rendered on a form rather than the timeline and that block markup
** is acceptable even if the "timeline-block-markup" setting is false.


*/
int wiki_convert_flags(int altForm2){
  static int wikiFlags = 0;

  if( wikiFlags==0 ){
    if( db_get_boolean("timeline-block-markup", 0) ){
      wikiFlags = WIKI_INLINE | WIKI_NOBADLINKS;
    }else{
      wikiFlags = WIKI_INLINE | WIKI_NOBLOCK | WIKI_NOBADLINKS;
    }
    if( db_get_boolean("timeline-plaintext", 0) ){
      wikiFlags |= WIKI_LINKSONLY;
    }
    if( db_get_boolean("timeline-hard-newlines", 0) ){
      wikiFlags |= WIKI_NEWLINE;
    }
  }
  if( altForm2 ){
    /* block markup (ex: <p>, <table>) allowed */
    return  wikiFlags & ~WIKI_NOBLOCK;
  }else{
    /* Do not allow any block format.  Everything in a <span> */
    return wikiFlags;
  }
}



/*
** The root program.  All variations call this core.
**

  style_set_current_feature("setup");
  style_header("Timeline Display Preferences");
  db_begin_transaction();
  @ <form action="%R/setup_timeline" method="post"><div>
  login_insert_csrf_secret();
  @ <p><input type="submit"  name="submit" value="Apply Changes"></p>

  @ <hr>
  onoff_attribute("Allow block-markup in timeline",
                  "timeline-block-markup", "tbm", 0, 0);
  @ <p>In timeline displays, check-in comments can be displayed with or
  @ without block markup such as paragraphs, tables, etc.
  @ (Property: "timeline-block-markup")</p>

  @ <hr>
  onoff_attribute("Plaintext comments on timelines",
                  "timeline-plaintext", "tpt", 0, 0);
  @ <p>In timeline displays, check-in comments are displayed literally,
  @ without any wiki or HTML interpretation.  Use CSS to change
  @ display formatting features such as fonts and line-wrapping behavior.
  @ (Property: "timeline-plaintext")</p>

#if INTERFACE
/*
** Allowed wiki transformation operations
*/
#define WIKI_HTMLONLY      0x0001  /* HTML markup only.  No wiki */
#define WIKI_INLINE        0x0002  /* Do not surround with <p>..</p> */
#define WIKI_NOBLOCK       0x0004  /* No block markup of any kind */
#define WIKI_BUTTONS       0x0008  /* Allow sub-menu buttons */
#define WIKI_NOBADLINKS    0x0010  /* Ignore broken hyperlinks */
#define WIKI_LINKSONLY     0x0020  /* No markup.  Only decorate links */
#define WIKI_NEWLINE       0x0040  /* Honor \n - break lines at each \n */
#define WIKI_MARKDOWNLINKS 0x0080  /* Resolve hyperlinks as in markdown */
#define WIKI_SAFE          0x0100  /* Make the result safe for embedding */
#define WIKI_TARGET_BLANK  0x0200  /* Hyperlinks go to a new window */

** State flags.  Save the lower 16 bits for the WIKI_* flags.
*/
#define AT_NEWLINE          0x0010000  /* At start of a line */
#define AT_PARAGRAPH        0x0020000  /* At start of a paragraph */
#define ALLOW_WIKI          0x0040000  /* Allow wiki markup */
#define ALLOW_LINKS         0x0080000  /* Allow [...] hyperlinks */
#define FONT_MARKUP_ONLY    0x0100000  /* Only allow MUTYPE_FONT markup */
#define INLINE_MARKUP_ONLY  0x0200000  /* Allow only "inline" markup */
#define IN_LIST             0x0400000  /* Within wiki <ul> or <ol> */

/*
** Current state of the rendering engine
*/
typedef struct Renderer Renderer;
struct Renderer {
  Blob *pOut;                 /* Output appended to this blob */

**
** This routine will probably modify the content of z[].
*/
static void wiki_render(Renderer *p, char *z){
  int tokenType;
  ParsedMarkup markup;
  int n;
  int inlineOnly = (p->state & INLINE_MARKUP_ONLY)!=0;
  int wikiHtmlOnly = (p->state & (WIKI_HTMLONLY | WIKI_LINKSONLY))!=0;
  int linksOnly = (p->state & WIKI_LINKSONLY)!=0;
  char *zOrig = z;

  /* Make sure the attribute constants and names still align
  ** following changes in the attribute list. */
  assert( fossil_strcmp(aAttribute[ATTR_WIDTH].zName, "width")==0 );

  while( z[0] ){
    if( wikiHtmlOnly ){
      n = nextRawToken(z, p, &tokenType);
    }else{
      n = nextWikiToken(z, p, &tokenType);
    }
    p->state &= ~(AT_NEWLINE|AT_PARAGRAPH);
    switch( tokenType ){
      case TOKEN_PARAGRAPH: {
        if( inlineOnly ){
          /* blob_append_string(p->pOut, " ¶ "); */
          blob_append_string(p->pOut, "    ");
        }else{
          if( p->wikiList ){
            popStackToTag(p, p->wikiList);
            p->wikiList = 0;
          }
          endAutoParagraph(p);
          blob_append_string(p->pOut, "\n\n");
          p->wantAutoParagraph = 1;
        }
        p->state |= AT_PARAGRAPH|AT_NEWLINE;
        break;
      }
      case TOKEN_NEWLINE: {
        if( p->renderFlags & WIKI_NEWLINE ){
          blob_append_string(p->pOut, "<br>\n");
        }else{
          blob_append_string(p->pOut, "\n");
        }
        p->state |= AT_NEWLINE;
        break;
      }
      case TOKEN_BUL_LI: {
        p->mRender |= RENDER_BLOCK;
        if( inlineOnly ){
          blob_append_string(p->pOut, " &bull; ");
        }else{
          if( p->wikiList!=MARKUP_UL ){
            if( p->wikiList ){
              popStackToTag(p, p->wikiList);
            }
            endAutoParagraph(p);
            pushStack(p, MARKUP_UL);
            blob_append_string(p->pOut, "<ul>");
            p->wikiList = MARKUP_UL;
          }
          popStackToTag(p, MARKUP_LI);
          startAutoParagraph(p);
          pushStack(p, MARKUP_LI);
          blob_append_string(p->pOut, "<li>");
        }
        break;
      }
      case TOKEN_NUM_LI: {
        p->mRender |= RENDER_BLOCK;
        if( inlineOnly ){
          blob_append_string(p->pOut, " # ");
        }else{
          if( p->wikiList!=MARKUP_OL ){
            if( p->wikiList ){
              popStackToTag(p, p->wikiList);
            }
            endAutoParagraph(p);
            pushStack(p, MARKUP_OL);
            blob_append_string(p->pOut, "<ol>");
            p->wikiList = MARKUP_OL;
          }
          popStackToTag(p, MARKUP_LI);
          startAutoParagraph(p);
          pushStack(p, MARKUP_LI);
          blob_append_string(p->pOut, "<li>");
        }
        break;
      }
      case TOKEN_ENUM: {
        p->mRender |= RENDER_BLOCK;
        if( inlineOnly ){
          blob_appendf(p->pOut, " (%d) ", atoi(z));
        }else{
          if( p->wikiList!=MARKUP_OL ){
            if( p->wikiList ){
              popStackToTag(p, p->wikiList);
            }
            endAutoParagraph(p);
            pushStack(p, MARKUP_OL);
            blob_append_string(p->pOut, "<ol>");
            p->wikiList = MARKUP_OL;
          }
          popStackToTag(p, MARKUP_LI);
          startAutoParagraph(p);
          pushStack(p, MARKUP_LI);
          blob_appendf(p->pOut, "<li value=\"%d\">", atoi(z));
        }
        break;
      }
      case TOKEN_INDENT: {
        p->mRender |= RENDER_BLOCK;
        if( !inlineOnly ){
          assert( p->wikiList==0 );
          pushStack(p, MARKUP_BLOCKQUOTE);
          blob_append_string(p->pOut, "<blockquote>");
          p->wantAutoParagraph = 0;
          p->wikiList = MARKUP_BLOCKQUOTE;
        }
        break;
      }
      case TOKEN_CHARACTER: {
        startAutoParagraph(p);
        if( p->state & WIKI_MARK ){
          blob_append_string(p->pOut, "<mark>");
          p->mRender |= RENDER_MARK;

          if( markup.endTag ){
            p->state |= ALLOW_WIKI;
          }else{
            p->state &= ~ALLOW_WIKI;
          }
        }else

        /* Ignore block markup for in-line rendering.
        */
        if( inlineOnly && (markup.iType&MUTYPE_INLINE)==0 ){
          /* Do nothing */
        }else

        /* Generate end-tags */
        if( markup.endTag ){
          popStackToTag(p, markup.iCode);
        }else

        /* Push <div> markup onto the stack together with the id=ID attribute.
        */

  Backlink *pBklnk,  /* Backlink extraction context */
  int flags          /* wiki parsing flags */
){
  Renderer renderer;
  int tokenType;
  ParsedMarkup markup;
  int n;
  int inlineOnly;
  int wikiHtmlOnly = 0;

  memset(&renderer, 0, sizeof(renderer));
  renderer.state = ALLOW_WIKI|AT_NEWLINE|AT_PARAGRAPH;
  if( flags & WIKI_NOBLOCK ){
    renderer.state |= INLINE_MARKUP_ONLY;
  }
  if( wikiUsesHtml() ){
    renderer.state |= WIKI_HTMLONLY;
    wikiHtmlOnly = 1;
  }
  inlineOnly = (renderer.state & INLINE_MARKUP_ONLY)!=0;

  while( z[0] ){
    if( wikiHtmlOnly ){
      n = nextRawToken(z, &renderer, &tokenType);
    }else{
      n = nextWikiToken(z, &renderer, &tokenType);
    }

          if( markup.endTag ){
            renderer.state |= ALLOW_WIKI;
          }else{
            renderer.state &= ~ALLOW_WIKI;
          }
        }else

        /* Ignore block markup for in-line rendering.
        */
        if( inlineOnly && (markup.iType&MUTYPE_INLINE)==0 ){
          /* Do nothing */
        }else

        /* Generate end-tags */
        if( markup.endTag ){
          popStackToTag(&renderer, markup.iCode);
        }else

        /* Push <div> markup onto the stack together with the id=ID attribute.
        */