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  • [X] I have searched the issue tracker for an issue that matches the one I want to file, without success.
  • [X] I am not looking for support or already pursued the available support channels without success.
  • [X] I have checked the troubleshooting guide for my problem, without success.

Viper Version

1.16

Go Version

1.19.4

Config Source

Files

Format

TOML

Repl.it link

No response

Code reproducing the issue

package main

import (
    "github.com/spf13/viper"
    "log"
)

type Cfg struct {
    Maps map[string]string
}

func main() {
    viper.SetConfigName("config")
    viper.AddConfigPath(".")
    _ = viper.ReadInConfig()

    var cfg Cfg

    _ = viper.Unmarshal(&cfg)
    t := viper.GetStringMapString("maps")
    log.Println(t, t["b.1"], t["b.2"], cfg)
}

Expected Behavior

config.toml

[maps]
"b.1" = "1"
"b.2" = "2"

2023/06/12 20:43:23 map[b.1:1 b.2:2] 1 2 {map[b.1:1 b.2:2]}

Actual Behavior

2023/06/12 20:43:23 map[b.1:1 b.2:2] 1 2 {map[]}

Steps To Reproduce

No response

Additional Information

No response

Comment From: github-actions[bot]

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Comment From: hotbrainy

I am facing same issue here. I've loaded app.env file contains symbol strings.

package main

import (
    "time"
        "fmt"
    "github.com/spf13/viper"
)

type Config struct {
        ApiKey         string        `mapstructure:"API_KEY"`

}
func main(){

    viper.AddConfigPath(".")
    viper.SetConfigType("env")
    viper.SetConfigName("app")

    viper.AutomaticEnv()

    err = viper.ReadInConfig()
    if err != nil {
        return
    }

    err = viper.Unmarshal(&config)
        fmt.Println(config.API_KEY)
}

app.env

API_KEY=qwer!@#$%

Expected: 

qwer!@#$%

Actual Result: ``` qwer ````

Comment From: Slitherings

I am facing same issue here. I've loaded app.env file contains symbol strings.

``` package main

import ( "time" "fmt" "github.com/spf13/viper" )

type Config struct { ApiKey string mapstructure:"API_KEY"

} func main(){

viper.AddConfigPath(".") viper.SetConfigType("env") viper.SetConfigName("app")

viper.AutomaticEnv()

err = viper.ReadInConfig() if err != nil { return }

err = viper.Unmarshal(&config) fmt.Println(config.API_KEY) } ```

app.env

API_KEY=qwer!@#$%

Expected:

qwer!@#$%

Actual Result:

qwer

`func main() { var config Config

viper.AddConfigPath(".")
viper.SetConfigType("env")
viper.SetConfigName("app")

// No need to manually set environment variables here

viper.AutomaticEnv()

err := viper.ReadInConfig()
if err != nil {
    return
}

err = viper.Unmarshal(&config)
if err != nil {
    return
}

fmt.Println(config.ApiKey)

}` This way, Viper will automatically match the case-insensitive environment variable names to the struct field names.

Comment From: github-actions[bot]

Issues with no activity for 30 days are marked stale and subject to being closed.