Fossil

**    brbg            Background color from branch name
**    ubg             Background color from user
**    namechng        Show only check-ins that have filename changes
**    forks           Show only forks and their children
**    ym=YYYY-MM      Show only events for the given year/month
**    yw=YYYY-WW      Show only events for the given week of the given year
**    ymd=YYYY-MM-DD  Show only events on the given day
**    days=N          Show events over the previous N days
**    datefmt=N       Override the date format
**    bisect          Show the check-ins that are in the current bisect
**    showid          Show RIDs
**    showsql         Show the SQL text
**
** p= and d= can appear individually or together.  If either p= or d=
** appear, then u=, y=, a=, and b= are ignored.

  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 */
  const char *zYearWeek = P("yw");   /* Check-ins for YYYY-WW (week-of-year) */
  char *zYearWeekStart = 0;          /* YYYY-MM-DD for start of YYYY-WW */
  const char *zDay = P("ymd");       /* Check-ins for the day YYYY-MM-DD */
  const char *zNDays = P("days");    /* Show events over the previous N days */
  int nDays;                         /* Numeric value for zNDays */
  const char *zChng = P("chng");     /* List of GLOBs for files that changed */
  int useDividers = P("nd")==0;      /* Show dividers if "nd" is missing */
  int renameOnly = P("namechng")!=0; /* Show only check-ins that rename files */
  int forkOnly = PB("forks");        /* Show only forks and their children */
  int bisectOnly = PB("bisect");     /* Show the check-ins of the bisect */
  int tmFlags = 0;                   /* Timeline flags */
  const char *zThisTag = 0;          /* Suppress links to this tag */

      zDay = db_text(0, "SELECT date(%Q)", zDay);
      if( zDay==0 || zDay[0]==0 ){
        zDay = db_text(0, "SELECT date('now')");
      }
      blob_append_sql(&cond, " AND %Q=date(event.mtime) ",
                   zDay);
    }
    else if( zNDays ){
      nDays = atoi(zNDays);
      if( nDays<1 ) nDays = 1;
      blob_append_sql(&cond, " AND event.mtime>=julianday('now','-%d days') ",
                      nDays);
    }
    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

    if( zYearMonth ){
      blob_appendf(&desc, "%ss for %h", zEType, zYearMonth);
    }else if( zYearWeek ){
      blob_appendf(&desc, "%ss for week %h beginning on %h", 
                   zEType, zYearWeek, zYearWeekStart);
    }else if( zDay ){
      blob_appendf(&desc, "%ss occurring on %h", zEType, zDay);
    }else if( zNDays ){
      blob_appendf(&desc, "%ss with the past %d day%s",
                          zEType, nDays, nDays>1 ? "s" : "");
    }else if( zBefore==0 && zCirca==0 && n>=nEntry && nEntry>0 ){
      blob_appendf(&desc, "%d most recent %ss", n, zEType);
    }else{
      blob_appendf(&desc, "%d %ss", n, zEType);
    }
    if( zUses ){
      char *zFilenames = names_of_file(zUses);