# HG changeset patch
# User Andreas Nolda <andreas@nolda.org>
# Date 1699095211 -3600
#      Sat Nov 04 11:53:31 2023 +0100
# Node ID cca280ec68d18441639791d0118c3f47a1496cce
# Parent  6c975500516a9b75f519d2223d3a295e1e44217c
update URLs in README.md

diff --git a/README.md b/README.md
--- a/README.md
+++ b/README.md
@@ -12,9 +12,6 @@
 * [blessings](https://pypi.org/project/blessings/)
 * [lxml](https://pypi.org/project/lxml/)
 
-The lxml package internally calls the
-[libxml2 and libxslt C libraries](http://xmlsoft.org).
-
 On Debian-based systems, the prerequisites can be installed as follows:
 
     sudo apt-get install python3-blessings python3-lxml
@@ -46,19 +43,19 @@
 Normally, `xgrep.py` outputs the matching parts of the XML files together with
 their file names and the XPath expression. The option `-m` outputs only the
 matching parts, without file names or XPath expressions; with `-M`, the matching
-parts are prefixed with the corresponding file name. If `-r <ns>` is set,
-the [EXSLT function `<ns>:test()`](http://exslt.org/regexp/functions/test/) can
-be used in the XPath expression for matching regular expressions. The option
+parts are prefixed with the corresponding file name. If `-r <ns>` is set, the
+[EXSLT function `<ns>:test()`](https://exslt.github.io/regexp/functions/test/)
+can be used in the XPath expression for matching regular expressions. The option
 `-i` indents the matching parts, and the option `-N` includes namespace
 declarations. Matching parts can be abbreviated to their first line by means of
 the option `-a`. The option `-s` normalises whitespace to spaces in the output.
 Processing instructions and comments in the XML files are ignored unless the
 options `-p` and `-P` are used. The `-C` option preserves color and formatting
-codes when piping output through [GNU less](http://www.gnu.org/software/less/)
+codes when piping output through [GNU less](https://www.gnu.org/software/less/)
 or similar programs.
 
 The options `-c`, `-l`, `-L`, `-n`, and `-q` mimic the behaviour of
-[GNU grep](http://www.gnu.org/software/grep/). The latter option suppresses any
+[GNU grep](https://www.gnu.org/software/grep/). The latter option suppresses any
 output, but still returns the exit status (`0` if there are matches, `1` if
 there are none, and `2` for errors).