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d2ff400641
In Prometheus, label values are treated as strings when used with the
`=` and `!=` operators, and as regular expressions when used with the
`=~` and `!~` operators.
Injecting and then highlighting all label values as regex leads to a
situation where entirely valid **string** label values containing regex
special characters are mistakenly parsed and highlighted as regex. This
results in syntax errors, causing labels to be highlighted incorrectly.
For example, in `foo{bar=~"[a-z]{1,3}"}`, `{` and `}` are regex special
characters, so regex highlighting is expected. However, in
`foo{path="/foo/{id}"}`, `{` and `}` are just part of the string and
have no special meaning, so the whole value should be highlighted as a
string.
11 lines
225 B
Scheme
11 lines
225 B
Scheme
((comment) @injection.content
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(#set! injection.language "comment"))
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((label_name)
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[
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"=~"
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"!~"
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]
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(label_value) @injection.content
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(#set! injection.language "regex")
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(#offset! @injection.content 0 1 0 -1))
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