From de150e2cf11babe7c54350e466ae54e582029eb9 Mon Sep 17 00:00:00 2001
From: Alan Orth <alan.orth@gmail.com>
Date: Sun, 2 Dec 2018 10:57:41 +0200
Subject: [PATCH] Update notes for 2018-12-02

---
 content/posts/2018-12.md | 14 ++++++++++++++
 docs/2018-12/index.html  | 20 +++++++++++++++++---
 docs/sitemap.xml         | 10 +++++-----
 3 files changed, 36 insertions(+), 8 deletions(-)

diff --git a/content/posts/2018-12.md b/content/posts/2018-12.md
index 77947ad86..8d0dc9322 100644
--- a/content/posts/2018-12.md
+++ b/content/posts/2018-12.md
@@ -41,5 +41,19 @@ org.im4java.core.InfoException: org.im4java.core.CommandException: org.im4java.c
 
 - A comment on [StackOverflow question](https://stackoverflow.com/questions/53560755/ghostscript-9-26-update-breaks-imagick-readimage-for-multipage-pdf) from yesterday suggests it might be a bug with the `pngalpha` device in Ghostscript and [links to an upstream bug](https://bugs.ghostscript.com/show_bug.cgi?id=699815)
 - I think we need to wait for a fix from Ubuntu
+- For what it's worth, I get the same error on my local Arch Linux environment with Ghostscript 9.26:
+
+```
+$ gs -q -dQUIET -dSAFER -dBATCH -dNOPAUSE -dNOPROMPT -dMaxBitmap=500000000 -dAlignToPixels=0 -dGridFitTT=2 -sDEVICE=pngalpha -dTextAlphaBits=4 -dGraphicsAlphaBits=4 -r72x72 -dFirstPage=1 -dLastPage=1 -sOutputFile=/tmp/out%d -f/home/aorth/Desktop/Food\ safety\ Kenya\ fruits.pdf
+DEBUG: FC_WEIGHT didn't match
+zsh: segmentation fault (core dumped)  gs -q -dQUIET -dSAFER -dBATCH -dNOPAUSE -dNOPROMPT -dMaxBitmap=500000000
+```
+
+- When I replace the `pngalpha` device with `png16m` as suggested in the StackOverflow comments it works:
+
+```
+$ gs -q -dQUIET -dSAFER -dBATCH -dNOPAUSE -dNOPROMPT -dMaxBitmap=500000000 -dAlignToPixels=0 -dGridFitTT=2 -sDEVICE=png16m -dTextAlphaBits=4 -dGraphicsAlphaBits=4 -r72x72 -dFirstPage=1 -dLastPage=1 -sOutputFile=/tmp/out%d -f/home/aorth/Desktop/Food\ safety\ Kenya\ fruits.pdf
+DEBUG: FC_WEIGHT didn't match
+```
 
 <!-- vim: set sw=2 ts=2: -->
diff --git a/docs/2018-12/index.html b/docs/2018-12/index.html
index b411e430a..0fc1bd8dc 100644
--- a/docs/2018-12/index.html
+++ b/docs/2018-12/index.html
@@ -21,7 +21,7 @@ I noticed that there is another issue with PDF thumbnails on CGSpace, and I see
 " />
 <meta property="og:type" content="article" />
 <meta property="og:url" content="https://alanorth.github.io/cgspace-notes/2018-12/" /><meta property="article:published_time" content="2018-12-02T02:09:30&#43;02:00"/>
-<meta property="article:modified_time" content="2018-12-02T02:09:30&#43;02:00"/>
+<meta property="article:modified_time" content="2018-12-02T10:47:41&#43;02:00"/>
 
 <meta name="twitter:card" content="summary"/>
 <meta name="twitter:title" content="December, 2018"/>
@@ -48,9 +48,9 @@ I noticed that there is another issue with PDF thumbnails on CGSpace, and I see
   "@type": "BlogPosting",
   "headline": "December, 2018",
   "url": "https://alanorth.github.io/cgspace-notes/2018-12/",
-  "wordCount": "202",
+  "wordCount": "301",
   "datePublished": "2018-12-02T02:09:30&#43;02:00",
-  "dateModified": "2018-12-02T02:09:30&#43;02:00",
+  "dateModified": "2018-12-02T10:47:41&#43;02:00",
   "author": {
     "@type": "Person",
     "name": "Alan Orth"
@@ -156,8 +156,22 @@ org.im4java.core.InfoException: org.im4java.core.CommandException: org.im4java.c
 <ul>
 <li>A comment on <a href="https://stackoverflow.com/questions/53560755/ghostscript-9-26-update-breaks-imagick-readimage-for-multipage-pdf">StackOverflow question</a> from yesterday suggests it might be a bug with the <code>pngalpha</code> device in Ghostscript and <a href="https://bugs.ghostscript.com/show_bug.cgi?id=699815">links to an upstream bug</a></li>
 <li>I think we need to wait for a fix from Ubuntu</li>
+<li>For what it&rsquo;s worth, I get the same error on my local Arch Linux environment with Ghostscript 9.26:</li>
 </ul>
 
+<pre><code>$ gs -q -dQUIET -dSAFER -dBATCH -dNOPAUSE -dNOPROMPT -dMaxBitmap=500000000 -dAlignToPixels=0 -dGridFitTT=2 -sDEVICE=pngalpha -dTextAlphaBits=4 -dGraphicsAlphaBits=4 -r72x72 -dFirstPage=1 -dLastPage=1 -sOutputFile=/tmp/out%d -f/home/aorth/Desktop/Food\ safety\ Kenya\ fruits.pdf
+DEBUG: FC_WEIGHT didn't match
+zsh: segmentation fault (core dumped)  gs -q -dQUIET -dSAFER -dBATCH -dNOPAUSE -dNOPROMPT -dMaxBitmap=500000000
+</code></pre>
+
+<ul>
+<li>When I replace the <code>pngalpha</code> device with <code>png16m</code> as suggested in the StackOverflow comments it works:</li>
+</ul>
+
+<pre><code>$ gs -q -dQUIET -dSAFER -dBATCH -dNOPAUSE -dNOPROMPT -dMaxBitmap=500000000 -dAlignToPixels=0 -dGridFitTT=2 -sDEVICE=png16m -dTextAlphaBits=4 -dGraphicsAlphaBits=4 -r72x72 -dFirstPage=1 -dLastPage=1 -sOutputFile=/tmp/out%d -f/home/aorth/Desktop/Food\ safety\ Kenya\ fruits.pdf
+DEBUG: FC_WEIGHT didn't match
+</code></pre>
+
 <!-- vim: set sw=2 ts=2: -->
 
   
diff --git a/docs/sitemap.xml b/docs/sitemap.xml
index a9085d211..41cd0731e 100644
--- a/docs/sitemap.xml
+++ b/docs/sitemap.xml
@@ -4,7 +4,7 @@
   
   <url>
     <loc>https://alanorth.github.io/cgspace-notes/2018-12/</loc>
-    <lastmod>2018-12-02T02:09:30+02:00</lastmod>
+    <lastmod>2018-12-02T10:47:41+02:00</lastmod>
   </url>
   
   <url>
@@ -199,7 +199,7 @@
   
   <url>
     <loc>https://alanorth.github.io/cgspace-notes/</loc>
-    <lastmod>2018-12-02T02:09:30+02:00</lastmod>
+    <lastmod>2018-12-02T10:47:41+02:00</lastmod>
     <priority>0</priority>
   </url>
   
@@ -210,7 +210,7 @@
   
   <url>
     <loc>https://alanorth.github.io/cgspace-notes/tags/notes/</loc>
-    <lastmod>2018-12-02T02:09:30+02:00</lastmod>
+    <lastmod>2018-12-02T10:47:41+02:00</lastmod>
     <priority>0</priority>
   </url>
   
@@ -222,13 +222,13 @@
   
   <url>
     <loc>https://alanorth.github.io/cgspace-notes/posts/</loc>
-    <lastmod>2018-12-02T02:09:30+02:00</lastmod>
+    <lastmod>2018-12-02T10:47:41+02:00</lastmod>
     <priority>0</priority>
   </url>
   
   <url>
     <loc>https://alanorth.github.io/cgspace-notes/tags/</loc>
-    <lastmod>2018-12-02T02:09:30+02:00</lastmod>
+    <lastmod>2018-12-02T10:47:41+02:00</lastmod>
     <priority>0</priority>
   </url>