debug cannot working when i use "[]" ?

[KangdaOOLin]

the question is : when i use the code below

process.env.DEBUG = '[webpack:dev]'
const debug = require('debug')(process.env.DEBUG)
debug('start')

it doesn't work, because process.env.DEBUG has '[]' character. when i use the code below:

process.env.DEBUG = 'webpack:dev'

it does work well!
so, if i want to use '[]', what should i do ?

[zacronos]

@WenKangLin: a PR that fixes this issue was merged very recently (#250 (comment)). However, I don't think a new npm release has been published with that fix included. Once that happens, updating your version of debug should be enough. In the meantime though, to use brackets or other regex special characters, you'll need to do 1 of 2 things.

Either:

• use the github master branch version of debug (specified as "debug": "git://github.com/visionmedia/debug.git" in your package.json dependencies)
• or else escape those special characters yourself, probably along the lines of process.env.DEBUG = '\\[webpack:dev\\]'. However, note that this solution will STOP working once you start using a version of debug that includes the PR mentioned above.

[KangdaOOLin]

good ! I use the first solution, it does work well ! Thank you for your answser !

[adi-works]

Really old issue, but I still can't get a bracket namespace to work, even when I managed to escape the brackets properly:

'\"[OWMR]\"'

[Qix-]

I would suggest against using anything other than /[a-zA-Z0-9_]+/ as your namespaces. It's never been guaranteed that they're valid and the next version will most likely forbid it.