💯 emoji in IPv6

Summary

When writing an IPv6, the sequence colon 1 0 0 colon is replaced by 💯. This is not 👌

Steps to reproduce

Type any IPv6 address with 100 in it, for example 2a00:a4c0:100::1

Expected behavior

The real IPv6 should appear

Actual behavior

The real IPv6 doesn't appear

Relevant logs and/or screenshots

Output of checks

Results of GitLab application Check

Checking GitLab Shell ...

GitLab Shell version >= 4.1.1 ? ... OK (4.1.1)
Repo base directory exists?
default... yes
Repo storage directories are symlinks?
default... no
Repo paths owned by git:git?
default... yes
Repo paths access is drwxrws---?
default... yes
hooks directories in repos are links: ... 
9/1 ... ok
9/2 ... ok
9/3 ... ok
9/4 ... ok
9/5 ... ok
9/6 ... ok
9/7 ... ok
9/8 ... ok
9/27 ... ok
Running /opt/gitlab/embedded/service/gitlab-shell/bin/check
Check GitLab API access: OK
Access to /var/opt/gitlab/.ssh/authorized_keys: OK
Send ping to redis server: OK
gitlab-shell self-check successful

Checking GitLab Shell ... Finished

Checking Sidekiq ...

Running? ... yes
Number of Sidekiq processes ... 1

Checking Sidekiq ... Finished

Checking Reply by email ...

Reply by email is disabled in config/gitlab.yml

Checking Reply by email ... Finished

Checking LDAP ...

LDAP is disabled in config/gitlab.yml

Checking LDAP ... Finished

Checking GitLab ...

Git configured with autocrlf=input? ... yes
Database config exists? ... yes
All migrations up? ... yes
Database contains orphaned GroupMembers? ... no
GitLab config exists? ... yes
GitLab config outdated? ... no
Log directory writable? ... yes
Tmp directory writable? ... yes
Uploads directory setup correctly? ... yes
Init script exists? ... skipped (omnibus-gitlab has no init script)
Init script up-to-date? ... skipped (omnibus-gitlab has no init script)
projects have namespace: ... 
9/1 ... yes
9/2 ... yes
9/3 ... yes
9/4 ... yes
9/5 ... yes
9/6 ... yes
9/7 ... yes
9/8 ... yes
9/27 ... yes
Redis version >= 2.8.0? ... yes
Ruby version >= 2.1.0 ? ... yes (2.3.3)
Your git bin path is "/opt/gitlab/embedded/bin/git"
Git version >= 2.7.3 ? ... yes (2.8.4)
Active users: 9

Checking GitLab ... Finished

Results of GitLab environment info

System information
System:		Ubuntu 16.04
Current User:	git
Using RVM:	no
Ruby Version:	2.3.3p222
Gem Version:	2.6.6
Bundler Version:1.13.7
Rake Version:	10.5.0
Sidekiq Version:4.2.7

GitLab information
Version:	8.15.2
Revision:	790035f
Directory:	/opt/gitlab/embedded/service/gitlab-rails
DB Adapter:	postgresql
URL:		https://gitlab.franceix.net
HTTP Clone URL:	https://gitlab.franceix.net/some-group/some-project.git
SSH Clone URL:	git@gitlab.franceix.net:some-group/some-project.git
Using LDAP:	no
Using Omniauth:	yes
Omniauth Providers: github

GitLab Shell
Version:	4.1.1
Repository storage paths:
- default: 	/var/opt/gitlab/git-data/repositories
Hooks:		/opt/gitlab/embedded/service/gitlab-shell/hooks/
Git:		/opt/gitlab/embedded/bin/git

Possible fixes

Do not replace emojis that are embedded in longer "words", that is, with characters other than space on both sides, or match the characters on each side to see if they all look like what an IPv6 looks like