diff --git a/R/add_indent.R b/R/add_indent.R
index a8a455e..35cc196 100644
--- a/R/add_indent.R
+++ b/R/add_indent.R
@@ -48,7 +48,9 @@
 
   for (i in positions + table_info$position_offset) {
     rowtext <- table_info$contents[i]
-    out <- sub(rowtext, latex_indent_unit(rowtext), out, perl = TRUE)
+    out <- sub(paste0(rowtext, "\\\\\\\\\n"),
+               paste0(latex_indent_unit(rowtext), "\\\\\\\\\n"),
+               out, perl = TRUE)
     table_info$contents[i] <- latex_indent_unit(rowtext)
   }
   out <- structure(out, format = "latex", class = "knitr_kable")
diff --git a/R/group_rows.R b/R/group_rows.R
index f6f0d43..4ac5654 100644
--- a/R/group_rows.R
+++ b/R/group_rows.R
@@ -186,7 +186,9 @@
                       regex_escape(extra_latex_after, double_backslash = TRUE))
   }
   new_rowtext <- paste0(pre_rowtext, rowtext)
-  out <- sub(rowtext, new_rowtext, out)
+  out <- sub(paste0(rowtext, "\\\\\\\\\n"),
+  	         paste0(new_rowtext, "\\\\\\\\\n"),
+  	         out)
   out <- gsub("\\\\addlinespace\n", "", out)
   out <- structure(out, format = "latex", class = "knitr_kable")
   table_info$group_rows_used <- TRUE
diff --git a/R/kable_styling.R b/R/kable_styling.R
index 4bb7a97..4c2b5e7 100644
--- a/R/kable_styling.R
+++ b/R/kable_styling.R
@@ -507,7 +507,7 @@
   # fontsize is good enough
   return(paste0(
     "\\begingroup\\fontsize{", font_size, "}{", row_height, "}\\selectfont\n", x,
-    "\\endgroup{}"
+    "\n\\endgroup{}"
   ))
 }
 
diff --git a/R/print.R b/R/print.R
index 7752d98..344d43d 100644
--- a/R/print.R
+++ b/R/print.R
@@ -10,7 +10,7 @@
   if (interactive() & rstudioapi::isAvailable()) {
     htmltools::html_print(html_result, viewer = rstudioapi::viewer)
   }
-  print(html_result)
+  # print(html_result)
 }
 
 #' HTML dependency for js script to enable bootstrap tooltip and popup message
diff --git a/README.md b/README.md
index ffba70f..2ac66c2 100644
--- a/README.md
+++ b/README.md
@@ -2,6 +2,8 @@
 [![CRAN_version](http://www.r-pkg.org/badges/version/kableExtra)](https://cran.r-project.org/package=kableExtra)
 [![CRAN_download](http://cranlogs.r-pkg.org/badges/kableExtra)](https://cran.r-project.org/package=kableExtra)
 [![CRAN_download_total](http://cranlogs.r-pkg.org/badges/grand-total/kableExtra)](https://cran.r-project.org/package=kableExtra)
+[![DOI](https://zenodo.org/badge/DOI/10.5281/zenodo.1035917.svg)](https://doi.org/10.5281/zenodo.1035917)
+
 
 ***
 
diff --git a/docs/awesome_table_in_html.Rmd b/docs/awesome_table_in_html.Rmd
index 3af994c..8e9f38f 100644
--- a/docs/awesome_table_in_html.Rmd
+++ b/docs/awesome_table_in_html.Rmd
@@ -173,16 +173,17 @@
 It is very easy to use `cell_spec` with conditional logic. Here is an example.
 ```{r, message=FALSE, warning=FALSE}
 library(dplyr)
+options(knitr.table.format = "html") 
 mtcars[1:10, 1:2] %>%
   mutate(
     car = row.names(.),
-    mpg = cell_spec(mpg, color = ifelse(mpg > 20, "red", "blue")),
-    cyl = cell_spec(cyl, color = "white", align = "c", angle = 45, 
+    mpg = cell_spec(mpg, "html", color = ifelse(mpg > 20, "red", "blue")),
+    cyl = cell_spec(cyl, "html", color = "white", align = "c", angle = 45, 
                     background = factor(cyl, c(4, 6, 8), 
                                         c("#666666", "#999999", "#BBBBBB")))
   ) %>%
   select(car, mpg, cyl) %>%
-  kable(escape = F) %>%
+  kable(format = "html", escape = F) %>%
   kable_styling("striped", full_width = F)
 ```
 
diff --git a/docs/awesome_table_in_html.html b/docs/awesome_table_in_html.html
index a2b79c7..67ba962 100644
--- a/docs/awesome_table_in_html.html
+++ b/docs/awesome_table_in_html.html
@@ -1962,16 +1962,17 @@
 <h2>Conditional logic</h2>
 <p>It is very easy to use <code>cell_spec</code> with conditional logic. Here is an example.</p>
 <pre class="r"><code>library(dplyr)
+options(knitr.table.format = &quot;html&quot;) 
 mtcars[1:10, 1:2] %&gt;%
   mutate(
     car = row.names(.),
-    mpg = cell_spec(mpg, color = ifelse(mpg &gt; 20, &quot;red&quot;, &quot;blue&quot;)),
-    cyl = cell_spec(cyl, color = &quot;white&quot;, align = &quot;c&quot;, angle = 45, 
+    mpg = cell_spec(mpg, &quot;html&quot;, color = ifelse(mpg &gt; 20, &quot;red&quot;, &quot;blue&quot;)),
+    cyl = cell_spec(cyl, &quot;html&quot;, color = &quot;white&quot;, align = &quot;c&quot;, angle = 45, 
                     background = factor(cyl, c(4, 6, 8), 
                                         c(&quot;#666666&quot;, &quot;#999999&quot;, &quot;#BBBBBB&quot;)))
   ) %&gt;%
   select(car, mpg, cyl) %&gt;%
-  kable(escape = F) %&gt;%
+  kable(format = &quot;html&quot;, escape = F) %&gt;%
   kable_styling(&quot;striped&quot;, full_width = F)</code></pre>
 <table class="table table-striped" style="width: auto !important; margin-left: auto; margin-right: auto;">
 <thead>
@@ -3548,7 +3549,7 @@
 1
 </td>
 <td style="text-align:center;">
-1
+0
 </td>
 </tr>
 <tr>
@@ -3588,7 +3589,7 @@
 6
 </td>
 <td style="text-align:center;">
-1
+0
 </td>
 </tr>
 <tr>
@@ -3596,7 +3597,7 @@
 7
 </td>
 <td style="text-align:center;">
-0
+1
 </td>
 </tr>
 <tr>
@@ -3607,7 +3608,7 @@
 8
 </td>
 <td style="text-align:center;">
-0
+1
 </td>
 </tr>
 <tr>
@@ -3615,7 +3616,7 @@
 9
 </td>
 <td style="text-align:center;">
-1
+0
 </td>
 </tr>
 <tr>
@@ -3637,7 +3638,7 @@
 11
 </td>
 <td style="text-align:center;">
-0
+1
 </td>
 </tr>
 <tr>
@@ -3645,7 +3646,7 @@
 12
 </td>
 <td style="text-align:center;">
-0
+1
 </td>
 </tr>
 <tr>
@@ -3656,7 +3657,7 @@
 13
 </td>
 <td style="text-align:center;">
-0
+1
 </td>
 </tr>
 <tr>
@@ -3664,7 +3665,7 @@
 14
 </td>
 <td style="text-align:center;">
-0
+1
 </td>
 </tr>
 <tr>
@@ -3672,7 +3673,7 @@
 15
 </td>
 <td style="text-align:center;">
-1
+0
 </td>
 </tr>
 </tbody>
diff --git a/docs/awesome_table_in_pdf.Rmd b/docs/awesome_table_in_pdf.Rmd
index 5be9621..ad14459 100644
--- a/docs/awesome_table_in_pdf.Rmd
+++ b/docs/awesome_table_in_pdf.Rmd
@@ -37,7 +37,7 @@
 \end{wrapfigure}
 The goal of `kableExtra` is to help you build common complex tables and manipulate table styles. It imports the pipe `%>%` symbol from `magrittr` and verbalizes all the functions, so basically you can add "layers" to a kable output in a way that is similar with `ggplot2` and `plotly`.
 
-To learn how to generate complex tables in LaTeX, please visit [http://haozhu233.github.io/kableExtra/awesome_table_in_html.html](http://haozhu233.github.io/kableExtra/awesome_table_in_html.html).
+To learn how to generate complex tables in HTML, please visit [http://haozhu233.github.io/kableExtra/awesome_table_in_html.html](http://haozhu233.github.io/kableExtra/awesome_table_in_html.html).
 
 # Installation
 ```r
diff --git a/docs/awesome_table_in_pdf.pdf b/docs/awesome_table_in_pdf.pdf
index 90d7b15..8724c98 100644
--- a/docs/awesome_table_in_pdf.pdf
+++ b/docs/awesome_table_in_pdf.pdf
Binary files differ