[PR PATCH] common/environment/setup/install.sh: support encoding in vman

[classabbyamp <classabbyamp@users.noreply.github.com>]

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There is a new pull request by classabbyamp against master on the void-packages repository

https://github.com/classabbyamp/void-packages vman-encoding
https://github.com/void-linux/void-packages/pull/43686

common/environment/setup/install.sh: support encoding in vman
`vman out/foo.fr.UTF-8.1` should install `usr/share/man/fr.UTF-8/man1/foo.1`, not `usr/share/man/fr/man1/foo.UTF-8.1`

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#### Testing the changes
- I tested the changes in this PR: **YES**



A patch file from https://github.com/void-linux/void-packages/pull/43686.patch is attached

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From cae2d36c675a05f61a761114390e707a407d6699 Mon Sep 17 00:00:00 2001
From: classabbyamp <void@placeviolette.net>
Date: Sun, 30 Apr 2023 14:12:13 -0400
Subject: [PATCH] common/environment/setup/install.sh: support encoding in vman

`vman out/foo.fr.UTF-8.1` should install `usr/share/man/fr.UTF-8/man1/foo.1`,
not `usr/share/man/fr/man1/foo.UTF-8.1`
---
 common/environment/setup/install.sh | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/common/environment/setup/install.sh b/common/environment/setup/install.sh
index b0c5b22f4c2a..ba0845bba5d1 100644
--- a/common/environment/setup/install.sh
+++ b/common/environment/setup/install.sh
@@ -94,9 +94,9 @@ _vman() {
 		suffix=${target##*.}
 	fi
 
-	if  [[ $target =~ (.*)\.([a-z][a-z](_[A-Z][A-Z])?)\.(.*) ]]
+	if  [[ $target =~ (.*)\.([a-z][a-z](_[A-Z][A-Z])?(\.[^.]+)?)\.(.*) ]]
 	then
-		name=${BASH_REMATCH[1]}.${BASH_REMATCH[4]}
+		name=${BASH_REMATCH[1]}.${BASH_REMATCH[5]}
 		mandir=${BASH_REMATCH[2]}/man${suffix:0:1}
 	else
 		name=$target