Fixed an issue where TeX output contained a figure even if the caption was empty

Author: LaurentRDC

CHANGELOG.md

@@ -2,6 +2,10 @@
 
 pandoc-plot uses [Semantic Versioning](http://semver.org/spec/v2.0.0.html)
 
+## Release 1.9.2
+
+* Fixed an issue where TeX output contained a figure even if the caption was empty (#37).
+
 ## Release 1.9.1
 
 * Fixed an issue where extra parameters were not passed down to `pandoc`, depending on the output format (#38).

pandoc-plot.cabal

@@ -1,6 +1,6 @@
 cabal-version:  2.2
 name:           pandoc-plot
-version:        1.9.1
+version:        1.9.2
 synopsis:       A Pandoc filter to include figures generated from code blocks using your plotting toolkit of choice.
 description:    A Pandoc filter to include figures generated from code blocks. 
                 Keep the document and code in the same location. Output is 

src/Text/Pandoc/Filter/Plot/Embed.hs

@@ -82,11 +82,15 @@ figure ::
   PlotM Block
 figure as fp caption' =
   return . head . toList $
-    -- We want the attributes both on the Figure element and the contained Image element
-    -- so that pandoc-plot plays nice with pandoc-crossref and other filters
-    figureWith as (simpleCaption (plain caption')) $
-      plain $
-        imageWith as (pack fp) mempty caption'
+    if null caption'
+      -- If there is no caption, a LaTeX figure may look strange. See #37
+      then plain $ imageWith as (pack fp) mempty caption'
+      else 
+        -- We want the attributes both on the Figure element and the contained Image element
+        -- so that pandoc-plot plays nice with pandoc-crossref and other filters
+        figureWith as (simpleCaption (plain caption')) $
+          plain $
+            imageWith as (pack fp) mempty caption'
 
 -- TODO: also add the case where SVG plots can be
 --       embedded in HTML output