Program: 188146
Project: 188146
Buggy source:
public static SpannableStringBuilder format(CharSequence text){
  SpannableStringBuilder builder=new SpannableStringBuilder(text);
  Matcher m=BOLD_PATTERN.matcher(text);
  for (int deleted=0; m.find(); ) {
    int s=m.start() - deleted;
    int e=m.end() - deleted;
    String value=m.group(1);
    builder.replace(s,e,value);
    deleted+=4;
    StyleSpan span=new StyleSpan(Typeface.BOLD);
    builder.setSpan(span,s,s + value.length(),0);
  }
  m.usePattern(STRIKE_THROUGH_PATTERN);
  for (int deleted=0; m.find(); ) {
    int s=m.start() - deleted;
    int e=m.end() - deleted;
    String value=m.group(1);
    builder.replace(s,e,value);
    deleted+=4;
    StrikethroughSpan span=new StrikethroughSpan();
    builder.setSpan(span,s,s + value.length(),0);
  }
  m.usePattern(ESCAPED_PATTERN);
  m.reset(builder);
  for (int deleted=0; m.find(); ) {
    int s=m.start() - deleted;
    int e=m.end() - deleted;
    String value=m.group(1);
    if ("String_Node_Str".equals(value)) {
      builder.replace(s,e,"String_Node_Str");
      deleted+=4;
    }
 else     if ("String_Node_Str".equals(value)) {
      builder.replace(s,e,"String_Node_Str");
      deleted+=3;
    }
 else     if ("String_Node_Str".equals(value)) {
      builder.replace(s,e,"String_Node_Str");
      deleted+=3;
    }
  }
  m.usePattern(NAMED_LINK_PATTERN);
  m.reset(builder);
  for (int deleted=0; m.find(); ) {
    int s=m.start() - deleted;
    int e=m.end() - deleted;
    String name=m.group(1);
    String url=m.group(2);
    builder.replace(s,e,name);
    deleted+=4 + url.length();
    if (url.startsWith("String_Node_Str")) {
      url="String_Node_Str" + url;
    }
 else     if (!url.startsWith("String_Node_Str") && !url.startsWith("String_Node_Str")) {
      url="String_Node_Str" + url;
    }
    URLSpan span=new URLSpan(url);
    builder.setSpan(span,s,s + name.length(),0);
  }
  m.usePattern(RAW_LINK_PATTERN);
  m.reset(builder);
  while (m.find()) {
    URLSpan span=new URLSpan(m.group());
    builder.setSpan(span,m.start(),m.end(),0);
  }
  return builder;
}

Fixed version (ground truth):
public static SpannableStringBuilder format(CharSequence text){
  SpannableStringBuilder b=new SpannableStringBuilder(text);
  Matcher m=BOLD_PATTERN.matcher(text);
  for (int deleted=0; m.find(); ) {
    int s=m.start() - deleted;
    int e=m.end() - deleted;
    String value=m.group(1);
    b.replace(s,e,value);
    deleted+=4;
    StyleSpan span=new StyleSpan(Typeface.BOLD);
    b.setSpan(span,s,s + value.length(),0);
  }
  m.usePattern(STRIKE_THROUGH_PATTERN);
  for (int deleted=0; m.find(); ) {
    int s=m.start() - deleted;
    int e=m.end() - deleted;
    String value=m.group(1);
    b.replace(s,e,value);
    deleted+=4;
    StrikethroughSpan span=new StrikethroughSpan();
    b.setSpan(span,s,s + value.length(),0);
  }
  m.usePattern(ESCAPED_PATTERN);
  m.reset(b);
  unescape(b,m);
  m.usePattern(NAMED_LINK_PATTERN);
  m.reset(b);
  for (int deleted=0; m.find(); ) {
    int s=m.start() - deleted;
    int e=m.end() - deleted;
    String name=m.group(1);
    String url=m.group(2);
    b.replace(s,e,name);
    deleted+=4 + url.length();
    if (url.startsWith("String_Node_Str")) {
      url="String_Node_Str" + url;
    }
 else     if (!url.startsWith("String_Node_Str") && !url.startsWith("String_Node_Str")) {
      url="String_Node_Str" + url;
    }
    URLSpan span=new URLSpan(url);
    b.setSpan(span,s,s + name.length(),0);
  }
  m.usePattern(RAW_LINK_PATTERN);
  m.reset(b);
  while (m.find()) {
    URLSpan span=new URLSpan(m.group());
    b.setSpan(span,m.start(),m.end(),0);
  }
  return b;
}