diff --git a/.editorconfig b/.editorconfig
index 1100de0..66c443a 100644
--- a/.editorconfig
+++ b/.editorconfig
@@ -6,6 +6,7 @@ root = true
 [*]
 indent_style = space
 indent_size = 4
+tab_width = 4
 end_of_line = lf
 charset = utf-8
 trim_trailing_whitespace = true
diff --git a/CODE_OF_CONDUCT.adoc b/CODE_OF_CONDUCT.adoc
index 227e1d2..a561593 100644
--- a/CODE_OF_CONDUCT.adoc
+++ b/CODE_OF_CONDUCT.adoc
@@ -1,4 +1,4 @@
-:coc_contact: tastytea@tastytea.de
+:contact-coc: tastytea@tastytea.de
 
 == Code of Conduct
 
@@ -32,7 +32,7 @@ Examples of unacceptable behavior by participants include:
 === Enforcement
 
 Instances of abusive, harassing, or otherwise unacceptable behavior may be
-reported by contacting the project team at {coc_contact}.
+reported by contacting the project team at {contact-coc}.
 
 All complaints will be reviewed and investigated and will result in a response
 that is deemed necessary and appropriate to the circumstances. The project team
diff --git a/CONTRIBUTING.adoc b/CONTRIBUTING.adoc
index c751b79..64170ac 100644
--- a/CONTRIBUTING.adoc
+++ b/CONTRIBUTING.adoc
@@ -1,8 +1,13 @@
 :project: mastodon-cpp
+:uri-base: https://schlomp.space/tastytea/{project}
+:uri-coc: {uri-base}/src/branch/master/CODE_OF_CONDUCT.adoc
+:contact-email: tastytea@tastytea.de
+:contact-xmpp: {contact-email}
+:contact-fediverse: https://likeable.space/users/tastytea
 
 == How to contribute
 
-Read the link:CODE_OF_CONDUCT.adoc[Code of Conduct].
+Read the link:{uri-coc}[Code of Conduct].
 
 === Reporting bugs or suggesting enhancements
 
@@ -11,12 +16,14 @@ https://schlomp.space/tastytea/{project}/issues[perform a search] to see if the
 problem has already been reported. If it has, add a comment to the existing
 issue instead of opening a new one. Same for enhancements.
 
-You can also contact me via mailto:tastytea@tastytea.de[E-Mail],
-link:xmpp:tastytea@tastytea.de[XMPP] or the
-https://likeable.space/users/tastytea[Fediverse] if you don't want to open an
-account.
+You can also contact me via mailto:{contact-email}[E-Mail],
+link:xmpp:{contact-xmpp}[XMPP] or the {contact-fediverse}[Fediverse] if you
+don't want to open an account.
 
 === Pull requests
 
 Please use similar coding conventions as the rest of the project. The basic rule
 to remember is to write code in the same style as the existing/surrounding code.
+
+You can also send me your patches via mailto:{contact-email}[E-Mail], ideally
+using `git format-patch` or `git send-email`.
diff --git a/README.adoc b/README.adoc
index 4e21994..b1c70ff 100644
--- a/README.adoc
+++ b/README.adoc
@@ -1,6 +1,8 @@
 = mastodon-cpp
 :toc: preamble
 :project: mastodon-cpp
+:uri-base: https://schlomp.space/tastytea/{project}
+:uri-branch-main: {uri-base}/src/branch/master
 
 *{project}* is a C++ wrapper for the Mastodon API. You submit an API call
 and get the raw JSON or easy to use abstractions.
@@ -10,9 +12,7 @@ and get the raw JSON or easy to use abstractions.
 The HTML reference can be generated with `build_doc.sh`, if doxygen is
 installed. It is also available at
 https://doc.schlomp.space/{project}/annotated.html[doc.schlomp.space/{project}/].
-There are more
-https://schlomp.space/tastytea/{project}/src/branch/master/examples[examples]
-in `examples/`.
+There are more {uri-branch-main}/examples[examples] in `examples/`.
 
 === Examples
 
@@ -257,10 +257,7 @@ the filter ID with `MASTODON_CPP_FILTER_ID`. You can select the list ID with
 * Have at least 1 list with at least one account in it.
 * have at least 1 account muted.
 
-== Contributing
-
-See
-https://schlomp.space/tastytea/{project}/src/branch/master/CONTRIBUTING.adoc[CONTRIBUTING.adoc].
+include::{uri-base}/raw/branch/master/CONTRIBUTING.adoc[]
 
 == Status of implementation