tell tidy the input is ISO-8859-1 & to not complain so much

docbook output is ISO-8859-1 and tidy just assumes ASCII
without the '-latin1' option you get things like
  line 86 column 13 - Warning: replacing invalid UTF-8 bytes (char. code U+00A9)
where docbook converts this
  <!entity  my-copy "&copy;">
  Copyright &my-copy; 2001-2017 by Privoxy Developers
to this
  Copyright © 2001-2017 by Privoxy Developers
and tidy strips out the copyright character.

with the '-latin1' option tidy leaves the copyright character as is.

options  -q --mute MISSING_ATTRIBUTE --mute TRIM_EMPTY_ELEMENT
just gets rid of verbose messages for things nobody is going to fix

diff --git a/GNUmakefile.in b/GNUmakefile.in
index 8edb54e..c135eb0 100644 (file)
--- a/GNUmakefile.in
+++ b/GNUmakefile.in
@@ -143,7 +143,19 @@ PERL       = perl
 DOC_DIR    = doc/source
 DOC_TMP    = $(DOC_DIR)/tmp
 DOC_STATUS = @DOC_STATUS@
 DOC_DIR    = doc/source
 DOC_TMP    = $(DOC_DIR)/tmp
 DOC_STATUS = @DOC_STATUS@

-TIDY       = tidy -modify -indent -wrap 120 --tidy-mark no
+TIDY       = tidy -latin1 -q -modify -indent -wrap 120 --tidy-mark no --mute MISSING_ATTRIBUTE --mute TRIM_EMPTY_ELEMENT
+# -latin1
+#     docbook output is ISO-8859-1 and tidy assumes ASCII
+# -q
+#     suppress nonessential output
+# -modify
+#     modify the original input file
+# --mute MISSING_ATTRIBUTE
+#     don't show <img> lacks "alt" attribute
+#             or <table> lacks "summary" attribute
+# --mute TRIM_EMPTY_ELEMENT
+#     don't show trimming empty <p>
+#

 RSYNC     = rsync -av -c --chmod=D755,F644
 
 # Program to do LF->CRLF
 RSYNC     = rsync -av -c --chmod=D755,F644
 
 # Program to do LF->CRLF