update latex tips

content/blog/20070522-latex-tips.md

@@ -1,12 +1,14 @@
 # LaTeX Tips
 
-*Posted: 2007-05-22*
+*Posted 2007-05-22; updated 2021-07-01.*
+
+Note that these instructions are over a decade old. Some things may have changed since then. :)
 
 ## Embedding fonts in PDFs
 
 To check whether fonts are embedded, use `pdffonts`, which is included with `xpdf`. `pdffonts` gives output that looks like this:
 
-```
+```text
 $ pdffonts paper.pdf
 name                                 type         emb sub uni object ID
 ------------------------------------ ------------ --- --- --- ---------
@@ -19,9 +21,14 @@ You want `emb` to be `yes` for all fonts (and possibly `sub` as well; also, all
 
 `pdftexDownloadBase14 true`
 
-If it's set to `false`, change it to `true`, then run `update-updmap` as root. Remake the PDF; if it still has non-embedded fonts, your figures are probably to blame. Check your PDF figures and make sure their fonts are embedded (using the `pdffonts` command). For anything that doesn't have embedded fonts, you can try the following magical invocation (all on one line):
+If it's set to `false`, change it to `true`, then run `update-updmap` as root. Remake the PDF; if it still has non-embedded fonts, your figures are probably to blame. Check your PDF figures and make sure their fonts are embedded (using the `pdffonts` command). For anything that doesn't have embedded fonts, you can try the following magical invocation:
 
-```gs -dSAFER -dNOPLATFONTS -dNOPAUSE -dBATCH -sDEVICE=pdfwrite -sPAPERSIZE=letter -dCompatibilityLevel=1.4 -dPDFSETTINGS=/printer -dCompatibilityLevel=1.4 -dMaxSubsetPct=100 -dSubsetFonts=true -dEmbedAllFonts=true -sOutputFile=figures/Mprime-new.pdf -f figures/Mprime.pdf```
+```
+gs -dSAFER -dNOPLATFONTS -dNOPAUSE -dBATCH -sDEVICE=pdfwrite \
+-sPAPERSIZE=letter -dCompatibilityLevel=1.4 -dPDFSETTINGS=/printer \
+-dCompatibilityLevel=1.4 -dMaxSubsetPct=100 -dSubsetFonts=true \
+-dEmbedAllFonts=true -sOutputFile=figures/Mprime-new.pdf -f figures/Mprime.pdf
+```
 
 This creates a file `figures/Mprime-new.pdf` that is hopefully identical to the input file `figures/Mprime.pdf`, except that the fonts are embedded. Run `pdffonts` on it to check.