fix #2332: pass knitr::asis_output() to the output hook, and every …

…`output` hook should check if the chunk option `results == 'asis'`

R/hooks-asciidoc.R

@@ -36,7 +36,9 @@ hooks_asciidoc = function() {
   hook.error = function(x, options) {
     sprintf('\n[CAUTION]\n====\n.Error\n%s\n====\n', gsub('^.*Error: ', '', x))
   }
-  hook.output = function(x, options) sprintf('\n----\n%s----\n', x)
+  hook.output = function(x, options) {
+    if (output_asis(x, options)) x else sprintf('\n----\n%s----\n', x)
+  }
   list(
     source = hook.source, output = hook.output, message = hook.message,
     warning = hook.warning, error = hook.error, plot = hook_plot_asciidoc

R/hooks-html.R

@@ -252,6 +252,7 @@ hooks_html = function() {
   hook = function(name) {
     force(name)
     function(x, options) {
+      if (name == 'output' && output_asis(x, options)) return(x)
       x = if (name == 'source') {
         c(hilight_source(x, 'html', options), '')
       } else escape_html(x)

R/hooks-md.R

@@ -175,6 +175,7 @@ hooks_markdown = function(strict = FALSE, fence_char = '`') {
   hook.o = function(class) {
     force(class)
     function(x, options) {
+      if (class == 'output' && output_asis(x, options)) return(x)
       hook.t(x, options[[paste0('attr.', class)]], options[[paste0('class.', class)]])
     }
   }
@@ -290,6 +291,9 @@ hooks_jekyll = function(highlight = c('pygments', 'prettify', 'none'), extra = '
     hook.r(x, options)
   }
   merge_list(hook.m, list(
-    source = source, output = hook.t, warning = hook.t, message = hook.t, error = hook.t
+    source = source, warning = hook.t, message = hook.t, error = hook.t,
+    output = function(x, options) {
+      if (output_asis(x, options)) x else hook.t(x, options)
+    }
   ))
 }

R/hooks-rst.R

@@ -42,7 +42,9 @@ hooks_rst = function(strict = FALSE) {
       (if (strict) hook.s else hook.t)(x, options)
     },
     warning = hook.s, error = hook.s, message = hook.s,
-    output = hook.s, inline = hook.i, plot = hook_plot_rst
+    inline = hook.i, plot = hook_plot_rst, output = function(x, options) {
+      if (output_asis(x, options)) x else hook.s(x, options)
+    }
   )
 }
 

R/hooks-textile.R

@@ -33,6 +33,7 @@ hooks_textile = function() {
     function(x, options) {
       if (name == 'source') x = c(hilight_source(x, 'textile', options), '')
       x = one_string(x)
+      if (name == 'output' && output_asis(x, options)) return(x)
       sprintf('bc(knitr %s %s#%s).. %s\np(knitr_end). \n\n',
               tolower(options$engine), name, options$label, x)
     }

R/output.R

@@ -512,8 +512,7 @@ sew.knit_asis = function(x, options, inline = FALSE, ...) {
     }
   }
   x = wrap_asis(x, options)
-  if (!out_format('latex') || inline) return(x)
-  # latex output need the \end{kframe} trick
+  if (inline) return(x)
   options$results = 'asis'
   knit_hooks$get('output')(x, options)
 }