CODEWITHSUNDEEP
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ashokhein
ashokhein

Reputation: 1058

Git filter tag is not working for multiple pattern

As per the document, 

Running "git tag" without arguments also lists all tags. The pattern is a shell wildcard (i.e., matched using fnmatch(3)). Multiple patterns may be given; if any of them matches, the tag is shown.

there are multiple tags in the repository and I want to list out only two sets of pattern in Jenkins git params.

Jenkins Git Parameter plugins are used to filter the "git tag -l {pattern}" and the pattern is based on fnmatch.

Example tag DEV2.3.4 ST2.4.6 SIT2.1.6

I just to filter out the DEV and ST tag. I tried a few different patterns.

git tag -l '(?:ST|DEV)\*'$/

git tag -l '/^DEV[0-9]+(\.[0-9]+)*$/'

git tag -l '@(DEV*|ST*)'

Could you help me out?

Upvotes: 1

Views: 858

Answers (2)

A.H.
A.H.

Reputation: 66243

As @torek already notes: A 'regex' is not a 'pattern' (aka. 'glob'). But you can emulate the OR (|) of a regex using multiple pattern because

[...] Multiple patterns may be given; if any of them matches, the tag is shown.

So this would select both DEV* and ST* tags:

git tag --list 'DEV*' 'ST*'

Upvotes: 1

torek
torek

Reputation: 487883

The crucial part of your quote above is:

The pattern is a shell wildcard (i.e., matched using fnmatch(3)).

Shell wildcards match with *, ?, and [...] only.1 They are implicitly rooted at both ends. For instance, the pattern a*z matches abcz, axyz, and az but not azy (doesn't end with z) nor baz (doesn't start with a). In shell wildcard patterns, question marks match any character, asterisks match zero or more of any character, and bracketed expressions match those characters. You can get all the DEVs with DEV*, and all the STs with ST*, but there is no syntax to match both.

1The C library fnmatch function takes flags that modify its behavior, and on systems with a GNU fnmatch, you can get some extended forms including the @(pattern1|pattern2) you were attempting. But Git doesn't set the flag that enables this.

Upvotes: 2

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