`DefaultText` is not respected for generating documentation

[6543]

My urfave/cli version is

( Put the version of urfave/cli that you are using here )

Checklist

• Are you running the latest v3 release? The list of releases is here.
• Did you check the manual for your release? The v3 manual is here
• Did you perform a search about this problem? Here's the GitHub guide about searching.

Dependency Management

• My project is using go modules.
• My project is automatically downloading the latest version (renovate).

Describe the bug

As per urfave/cli-docs#11 (comment)

I subled over the same problem, where i want to change the text for the default value.
Default: os.TempDir() so the val changes depending on the system generating the docs :/

This makes a bad description at https://woodpecker-ci.org/docs/cli#exec (search for flag --backend-local-temp-dir)

To reproduce

Just use a changing default and DefaultText and try to generate markdown docs ...

Observed behavior

The DefaultText works as expected, when used with the --help flag on a compiled cli binary

Expected behavior

Show the DefaultText instead of resolving Default value.

[6543]

found a workaroud for woodpecker-ci/woodpecker#5656 ... but it's guly

[dearchap]

@6543 I looked at your PR and it appears you did not define DefaultText for the StringFlag originally. It should work with DefaultText set. See this example on golang playground

https://go.dev/play/p/u5UImye5g8x

[6543]

yes and no :)

it works for the binary but i created that issue because docs generation is broken :/

urfave/cli-docs#17

[6543]

@dearchap got my pull working and ready to review :)