[FS#3801] service function in shinit fails if service name contains a dash

[OpenWrt Bugs]

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User who did this - Rodney Hester (rhester72) 

Attached to Project - OpenWrt/LEDE Project
Summary - service function in shinit fails if service name contains a dash
Task Type - Bug Report
Category - Base system
Status - Unconfirmed
Assigned To - 
Operating System - All
Severity - Very Low
Priority - Very Low
Reported Version - openwrt-21.02
Due in Version - Undecided
Due Date - Undecided
Details - On OpenWRT 21.02, a change was made recently to use uniq to handle multi-process services.

While reviewing it, I discovered that service names containing a dash throw the following error from jsonfilter (visible if you remove the -q argument in the function):

Syntax error: Invalid escape sequence
In expression @.dnscrypt-proxy.instances[*].running
Near here --------------^


which results in the service being indicated as not running.

More information can be found at the following URL:
https://bugs.openwrt.org/index.php?do=details&task_id=3801

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