Refactor: HUGO_EXPORT_DIR -> HUGO_BASE_DIR

Found the earlier name confusing as the value actually represents the
base directory for the Hugo site development. The posts are actually
exported to a content/ subdir under that.

doc/ox-hugo-manual.org

@@ -9,7 +9,7 @@ Markdown]] flavor.
                   [[http://gohugo.io/content/sections/][here]] for more information on Hugo sections.  It is
                   common for this property to be set to =posts= or
                   =blog=.
-- HUGO_EXPORT_DIR :: Root directory of the source for the Hugo site.
+- HUGO_BASE_DIR :: Root directory of the source for the Hugo site.
      If this is set to =~/hugo/=, the exported Markdown files will be
      saved to =~/hugo/content/<HUGO_SECTION>/= directory.  By [[http://gohugo.io/content/organization/][default]],
      the Markdown files reside in a hierarchy under the =content/=

ox-hugo.el

@@ -107,7 +107,7 @@ directory where all Hugo posts should go by default."
                    (:hugo-url "HUGO_URL" nil nil)
                    ;; Non-front-matter options
                    (:hugo-section "HUGO_SECTION" nil org-hugo-default-section-directory)
-                   (:hugo-export-dir "HUGO_EXPORT_DIR" nil nil)
+                   (:hugo-base-dir "HUGO_BASE_DIR" nil nil)
                    (:hugo-static-images "HUGO_STATIC_IMAGES" nil "images")))
 
 
@@ -222,13 +222,13 @@ PATH is the path to the image or pdf attachment.
 INFO is a plist used as a communication channel."
   (message "[ox-hugo DBG] The Hugo sectioimage dir is: %s" (plist-get info :hugo-static-images) )
   (message "[ox-hugo DBG] The Hugo section is: %s" (plist-get info :hugo-section) )
-  (message "[ox-hugo DBG] The Hugo export dir is: %s" (plist-get info :hugo-export-dir) )
+  (message "[ox-hugo DBG] The Hugo base dir is: %s" (plist-get info :hugo-base-dir) )
 
   (let* ((full-path (file-truename path))
          (exportables '("jpg" "jpeg" "tiff" "png" "pdf" "odt" ))
          (file-name (file-name-nondirectory path))
          (image-export-dir (concat
-                            (file-name-as-directory (plist-get info :hugo-export-dir))
+                            (file-name-as-directory (plist-get info :hugo-base-dir))
                             "static/"
                             (file-name-as-directory (plist-get info :hugo-static-images))
                             ))
@@ -413,14 +413,14 @@ Return output file's name."
 		 'hugo subtreep visible-only)
 		(org-export--get-buffer-attributes)
                 (org-export-get-environment 'hugo subtreep)))
-         (export-dir-path (if (null (plist-get info :hugo-export-dir))
-                              (user-error "It is mandatory to set the HUGO_EXPORT_DIR property")
-                            (file-name-as-directory (plist-get info :hugo-export-dir))))
+         (base-dir (if (null (plist-get info :hugo-base-dir))
+                       (user-error "It is mandatory to set the HUGO_BASE_DIR property")
+                     (file-name-as-directory (plist-get info :hugo-base-dir))))
          (content-dir "content/")
          (section-dir (if (null (plist-get info :hugo-section))
                           (user-error "It is mandatory to set the HUGO_SECTION property")
                         (file-name-as-directory (plist-get info :hugo-section))))
-         (pub-dir (let ((dir (concat export-dir-path content-dir section-dir)))
+         (pub-dir (let ((dir (concat base-dir content-dir section-dir)))
                     (make-directory dir :parents) ;Create the directory if it does not exist
                     dir))
          (outfile (org-export-output-file-name ".md" subtreep pub-dir)))

tests/org/prop-drawer-parsing/prop-drawer-parsing.org

@@ -1,5 +1,5 @@
 #+TITLE: My Blog
-#+HUGO_EXPORT_DIR: ../../md/
+#+HUGO_BASE_DIR: ../../md/
 #+HUGO_SECTION: posts
 
 # 1. Load `ox-hugo'

tests/org/small1/small1.org

@@ -1,5 +1,5 @@
 #+TITLE: My Blog
-#+HUGO_EXPORT_DIR: ../../md/
+#+HUGO_BASE_DIR: ../../md/
 #+HUGO_SECTION: posts
 
 # 1. Load `ox-hugo'

tests/org/tags-and-keywords/tags-and-keywords.org

@@ -1,5 +1,5 @@
 #+TITLE: My Blog
-#+HUGO_EXPORT_DIR: ../../md/
+#+HUGO_BASE_DIR: ../../md/
 #+KEYWORDS: alpha beta
 
 # 1. Load `ox-hugo'