}

/*
** WEBPAGE: timeline
**
** Query parameters:
**
**    a=TIMEORTAG    After this event
**    b=TIMEORTAG    Before this event
**    c=TIMEORTAG    "Circa" this event
**    m=TIMEORTAG    Mark this event
**    n=COUNT        Suggested number of events in output
**    p=CHECKIN      Parents and ancestors of CHECKIN
**    d=CHECKIN      Descendants of CHECIN
**    dp=CHECKIN     The same as d=CHECKIN&p=CHECKIN
**    t=TAG          Show only check-ins with the given TAG
**    r=TAG          Show check-ins related to TAG, equivalent to t=TAG&rel
**    rel            Show related check-ins as well as those matching t=TAG
**    mionly         Limit rel to show ancestors but not descendants
**    ms=STYLE       Set tag match style to EXACT, GLOB, LIKE, REGEXP
**    u=USER         Only show items associated with USER
**    y=TYPE         'ci', 'w', 't', 'e', or (default) 'all'
**    ng             No Graph.
**    nd             Do not highlight the focus check-in
**    v              Show details of files changed
**    f=CHECKIN      Show family (immediate parents and children) of CHECKIN
**    from=CHECKIN   Path from...
**    to=CHECKIN       ... to this

  const char *zUser = P("u");        /* All entries by this user if not NULL */
  const char *zType = PD("y","all"); /* Type of events.  All if NULL */
  const char *zAfter = P("a");       /* Events after this time */
  const char *zBefore = P("b");      /* Events before this time */
  const char *zCirca = P("c");       /* Events near this time */
  const char *zMark = P("m");        /* Mark this event or an event this time */
  const char *zTagName = P("t");     /* Show events with this tag */
  const char *zBrName = P("r");      /* Equivalent to t=TAG&rel */
  int related = PB("rel");           /* Show events related to zTagName */
  const char *zMatchStyle = P("ms"); /* Tag/branch match style string */
  MatchStyle matchStyle = MS_EXACT;  /* Match style code */
  const char *zMatchDesc = 0;        /* Tag match expression description text */
  const char *zTagSql = 0;           /* Tag/branch match SQL expression */
  const char *zSearch = P("s");      /* Search string */
  const char *zUses = P("uf");       /* Only show check-ins hold this file */
  const char *zYearMonth = P("ym");  /* Show check-ins for the given YYYY-MM */

  ){
    login_needed(g.anon.Read && g.anon.RdTkt && g.anon.RdWiki);
    return;
  }
  url_initialize(&url, "timeline");
  cgi_query_parameters_to_url(&url);

  /* Convert r=TAG to t=TAG&rel. */
  if( zBrName && !related ){
    cgi_delete_query_parameter("r");
    cgi_set_query_parameter("t", zBrName);
    cgi_set_query_parameter("rel", "1");
    zTagName = zBrName;
    related = 1;
  }



  /* Ignore empty tag query strings. */

  if( zTagName && !*zTagName ){
    zTagName = 0;


  }

  /* Finish preliminary processing of tag match queries. */
  if( zTagName ){
    /* Interpet the tag style string. */

    if( fossil_stricmp(zMatchStyle, "glob")==0 ){
      matchStyle = MS_GLOB;
    }else if( fossil_stricmp(zMatchStyle, "like")==0 ){
      matchStyle = MS_LIKE;
    }else if( fossil_stricmp(zMatchStyle, "regexp")==0 ){
      matchStyle = MS_REGEXP;
    }else{
      /* For exact maching, inhibit links to the selected tag. */
      zThisTag = zTagName;
    }

    /* Display a checkbox to enable/disable display of related check-ins. */
    style_submenu_checkbox("rel", "Related", 0);

    /* Construct the tag match expression. */

    zTagSql = tagMatchExpression(matchStyle, zTagName, &zMatchDesc);
  }






  if( zMark && zMark[0]==0 ){
    if( zAfter ) zMark = zAfter;
    if( zBefore ) zMark = zBefore;
    if( zCirca ) zMark = zCirca;
  }
  if( (zTagSql && db_int(0,"SELECT count(*) "
      "FROM tagxref NATURAL JOIN tag WHERE %s",zTagSql/*safe-for-%s*/)<=nEntry)

                   zDay);
    }
    if( zTagSql ){
      blob_append_sql(&cond,
        " AND (EXISTS(SELECT 1 FROM tagxref NATURAL JOIN tag"
        " WHERE %s AND tagtype>0 AND rid=blob.rid)\n", zTagSql/*safe-for-%s*/);

      if( related ){
        /* The next two blob_appendf() calls add SQL that causes check-ins that
        ** are not part of the branch which are parents or children of the
        ** branch to be included in the report.  This related check-ins are
        ** useful in helping to visualize what has happened on a quiescent
        ** branch that is infrequently merged with a much more activate branch.
        */
        blob_append_sql(&cond,

      blob_appendf(&desc, " in the most recent bisect");
      tmFlags |= TIMELINE_DISJOINT;
    }
    if( zUser ){
      blob_appendf(&desc, " by user %h", zUser);
      tmFlags |= TIMELINE_DISJOINT;
    }
    if( zTagName ){
      if( matchStyle==MS_EXACT ){
        if( related ){
          blob_appendf(&desc, " related to %h", zMatchDesc);
        }else{
          blob_appendf(&desc, " tagged with %h", zMatchDesc);
        }
      }else{
        if( related ){
          blob_appendf(&desc, " related to tags matching %h", zMatchDesc);
        }else{
          blob_appendf(&desc, " with tags matching %h", zMatchDesc);
        }
      }
      tmFlags |= TIMELINE_DISJOINT;
    }
    addFileGlobDescription(zChng, &desc);
    if( rAfter>0.0 ){
      if( rBefore>0.0 ){
        blob_appendf(&desc, " occurring between %h and %h.<br />",