[elpa] externals/scanner 1439335 16/17: update documentation

[Stefan Monnier]

branch: externals/scanner
commit 1439335484257935bb29cef31f1fa3daa9376440
Author: Raffael Stocker <r.stocker@mnet-mail.de>
Commit: Raffael Stocker <r.stocker@mnet-mail.de>

    update documentation
---
 Readme.org | 19 ++++++++++++++-----
 scanner.el | 18 +++++++++++++-----
 2 files changed, 27 insertions(+), 10 deletions(-)

diff --git a/Readme.org b/Readme.org
index be5416d..2b750e1 100644
--- a/Readme.org
+++ b/Readme.org
@@ -10,7 +10,8 @@
   provided by =scanimage(1)= for image mode and =tesseract(1)= for document
   mode.  The scanner package uses =tesseract(1)= to provide optical character
   recognition (OCR).  You can select the language plugins with
-  =scanner-tesseract-languages=.
+  =scanner-tesseract-languages=.  See also the remark about the data
+  directories below.
 
   In document mode, you can scan one or multiple pages that are then written
   in a customizable output format, e.g. (searchable) PDF or text, or whatever
@@ -32,10 +33,18 @@
   For both images and documents, you can customize the scan mode (e.g. "Color"
   or "Gray") if your scanning device supports it.
 
-  Finally, you can pass additional options to the backends using the
-  customization variables =scanner-scanimage-switches= and
-  =scanner-tesseract-switches=.  The former variable is helpful for tuning
-  brightness and contrast, for instance.
+  You can pass additional options to the backends using the customization
+  variables =scanner-scanimage-switches= and =scanner-tesseract-switches=.
+  The former variable is helpful for tuning brightness and contrast, for
+  instance.
+
+  Finally, the customization options =scanner-tessdata-dir= and
+  =scanner-tessdata-configdir= must be set to point to tesseract's data
+  directory containing the language definitions (usually something like
+  =/usr/share/tessdata/=) and tesseract's configs directory containing the
+  output configurations (usually something like
+  =/usr/share/tessdata/configs/=).
+
 
   
 * Bugs
diff --git a/scanner.el b/scanner.el
index b1f6f0f..65c9557 100644
--- a/scanner.el
+++ b/scanner.el
@@ -35,7 +35,8 @@
 ;; provided by scanimage(1) for image mode and tesseract(1) for document mode.
 ;; The scanner package uses tesseract(1) to provide optical character
 ;; recognition (OCR).  You can select the language plugins with
-;; ‘scanner-tesseract-languages’.
+;; ‘scanner-tesseract-languages’.  See also the remark about the data
+;; directories below.
 ;;
 ;; In document mode, you can scan one or multiple pages that are then written
 ;; in a customizable output format, e.g. (searchable) PDF or text, or whatever
@@ -57,10 +58,17 @@
 ;; For both images and documents, you can customize the scan mode
 ;; (e.g. "Color" or "Gray") if your scanning device supports it.
 ;;
-;; Finally, you can pass additional options to the backends using the
-;; customization variables ‘scanner-scanimage-switches’ and
-;; ‘scanner-tesseract-switches’.  The former variable is helpful for tuning
-;; brightness and contrast, for instance.
+;; You can pass additional options to the backends using the customization
+;; variables ‘scanner-scanimage-switches’ and ‘scanner-tesseract-switches’.
+;; The former variable is helpful for tuning brightness and contrast, for
+;; instance.
+;;
+;; Finally, the customization options ‘scanner-tessdata-dir’ and
+;; ‘scanner-tessdata-configdir’ must be set to point to tesseract's data
+;; directory containing the language definitions (usually something like
+;; /usr/share/tessdata/) and tesseract's configs directory containing the
+;; output configurations (usually something like
+;; /usr/share/tessdata/configs/).
 
 ;;; Code: