Create index of definitions / theorems at end of bookdown book

Question

For reader convenience, I\'d like to include, at the end of my bookdown book, written in markdown, a simple list or index of definitions from the body of the book. i.e. ones

Answer 1

Perfect, so adding on from Yihui's suggestion, this prints out the definitions as well, and no need to bother with names, just labels will do:

```{definition, 'Bar',echo=T,cache=F}
Bar is defined as something
```

```{definition, 'Bar2',echo=T,cache=F}
Bar2 is defined as something else.
```

Here are all the definitions in this book.

```{r comment="",results="asis",echo=FALSE,cache=F}


for(x in knitr::all_labels(engine == 'definition')){
   paste0("\n\n","\\@ref(def:",x,"): ",x,"\n\n>",knitr:::knit_code$get(x),collapse="\n\n") %>% cat
} 

```

... produces this:

Here are all the definitions in this book.

1: Bar

Bar is defined as something

2: Bar2

Bar2 is defined as something else.