selection bug in text.go

[rjkroege]

On double-clicking and not a Frame issue. 😊

Text.Select: DoubleClick returned 27783, 0
panic: acme: textsetselect p0=518 p1=0 q0=27783 q1=0 t.org=27265 nchars=1134
goroutine 11 [running, locked to thread]:
main.(*Text).SetSelect(0xc420458528, 0x6c87, 0x0)
        /Users/rjkroege/tools/gopkg/src/github.com/rjkroege/edwood/text.go:1303 +0x352
main.(*Text).Select(0xc420458528)
        /Users/rjkroege/tools/gopkg/src/github.com/rjkroege/edwood/text.go:1118 +0x670
main.MovedMouse(0x4c6, 0x241, 0x1, 0x2b2ef9bc)
        /Users/rjkroege/tools/gopkg/src/github.com/rjkroege/edwood/acme.go:418 +0x4fb
main.mousethread(0xc4200b60c0)
        /Users/rjkroege/tools/gopkg/src/github.com/rjkroege/edwood/acme.go:297 +0x31c
created by main.main
        /Users/rjkroege/tools/gopkg/src/github.com/rjkroege/edwood/acme.go:171 +0x934

[rjkroege]

Very difficult to replicate btw: this happened once over the course of several days of use.

[rjkroege]

Likely fixed in 9decce2