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Json – How to use jq to obtain the value of a GitLab issue label

GitLab allows one to attach labels to issues. I would like to use jq to dig into the JSON representation of these labels. Here’s the labels section of the JSON file for one issue:

"labels": [
   "AI::Assessed",
   "Pri::1 - High",
   "Type::Investigation",
   "v::Backlog"
]

How, with jq, can I get at the value of the "v" label, which here is "Backlog"?

Note that the number of labels varies from issue to issue. The :: signifies that a label is a scoped label.

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2

Answers


  1. 0

    You can use capture :

    #!/bin/bash

echo '{"labels": [
   "AI::Assessed",
   "Pri::1 - High",
   "Type::Investigation",
   "v::Backlog"
]}' | jq -r '.labels[] | capture("v::(?<v>.*)").v'

# Output : Backlog
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  2. 0

    A trivial solution with startswith and substring/string-slicing:

    .labels[] | select(startswith("v::"))[3:]
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