Configure delve debugger to print long strings

Table of Contents

Today I came across the fact that print in debugger mode does not show long lines.

> main.main() ./main.go:7 (PC: 0x10b08d4)
     2:
     3:  import "fmt"
     4:
     5:  func main() {
     6:    v1 := "aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa"
=>   7:    fmt.Println(v1)
     8:  }
(dlv) p v1
"aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa...+2 more"

Let’s change max-string-len:

(dlv) config -list
aliases            map
substitute-path    
max-string-len     <not defined>
max-array-values   <not defined>
show-location-expr false
(dlv) config max-string-len 1000
(dlv) p v1
"aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa"

✅ Now we are good to go.