Merge 13a3b8b4d9 into 2fc57d6306

test-highlighting.zsh and test-perfs.zsh were linked as tests/test-*.zsh,
but this file already lives in tests/, so the links resolved to
tests/tests/test-*.zsh and 404'd. Found by pointing a markdown
link-checker at the repo.

INSTALL.md

@@ -5,7 +5,7 @@ How to install
 
 First, install the package:
 
-* Arch Linux: [community/zsh-syntax-highlighting][arch-package] / [AUR/zsh-syntax-highlighting-git][AUR-package]
+* Arch Linux: [Extra/zsh-syntax-highlighting][arch-package] / [AUR/zsh-syntax-highlighting-git][AUR-package]
 * Debian: `zsh-syntax-highlighting` package [in `stretch`][debian-package] (or in [OBS repository][obs-repository])
 * Fedora: [zsh-syntax-highlighting package][fedora-package-alt] in Fedora 24+ (or in [OBS repository][obs-repository])
 * FreeBSD: `pkg install zsh-syntax-highlighting` (port name: [`shells/zsh-syntax-highlighting`][freebsd-port])
@@ -36,12 +36,24 @@ See also [repology's cross-distro index](https://repology.org/metapackage/zsh-sy
 
 Second, enable zsh-syntax-highlighting by sourcing the script. Running this command on the terminal will add the source line to the end of your .zshrc:
 
-* On most Linux distributions (except perhaps NixOS):
+* On most Linux distributions (except Gentoo, Arch Linux, and perhaps NixOS):
 
     ```zsh
     echo "source /usr/share/zsh-syntax-highlighting/zsh-syntax-highlighting.zsh" >> ${ZDOTDIR:-$HOME}/.zshrc
     ```
 
+* Gentoo:
+
+    ```zsh
+    echo "source /usr/share/zsh/site-functions/zsh-syntax-highlighting.zsh" >> ${ZDOTDIR:-$HOME}/.zshrc
+    ```
+
+* Arch Linux
+
+    ```zsh
+    echo "source /usr/share/zsh/plugins/zsh-syntax-highlighting/zsh-syntax-highlighting.zsh" >> ${ZDOTDIR:-$HOME}/.zshrc
+    ```
+
 * NetBSD and OpenBSD:
 
     ```zsh

tests/README.md

@@ -86,7 +86,7 @@ grow ways to set `$PREBUFFER` to inject free-form code into the generated file.
 Highlighting test
 -----------------
 
-[`test-highlighting.zsh`](tests/test-highlighting.zsh) tests the correctness of
+[`test-highlighting.zsh`](test-highlighting.zsh) tests the correctness of
 the highlighting. Usage:
 
 ```zsh
@@ -110,7 +110,7 @@ results (tests that failed but were expected to succeed, or vice-versa), run
 Performance test
 ----------------
 
-[`test-perfs.zsh`](tests/test-perfs.zsh) measures the time spent doing the
+[`test-perfs.zsh`](test-perfs.zsh) measures the time spent doing the
 highlighting. Usage:
 
 ```zsh