commit f5c03fa

Fix crash when completing nicks with special chars

Not enough space was allocated for the completed text when the word
being completed had characters encoded in more than one byte.  This was
because "word" was a string instead of a []rune, thus "len(word)"
counted each byte instead of each character.

Fixes #42

 1@@ -377,8 +377,8 @@ func (app *App) completions(cursorIdx int, text []rune) []ui.Completion {
 2 		}
 3 	}
 4 	start++
 5-	word := string(text[start:cursorIdx])
 6-	wordCf := app.s.Casemap(word)
 7+	word := text[start:cursorIdx]
 8+	wordCf := app.s.Casemap(string(word))
 9 	for _, name := range app.s.Names(app.win.CurrentBuffer()) {
10 		if strings.HasPrefix(app.s.Casemap(name.Name.Name), wordCf) {
11 			nickComp := []rune(name.Name.Name)

1@@ -35,7 +35,6 @@ type Editor struct {
2 	autoComplete func(cursorIdx int, text []rune) []Completion
3 	autoCache    []Completion
4 	autoCacheIdx int
5-	completeIdx  int
6 }
7 
8 func NewEditor(width int, autoComplete func(cursorIdx int, text []rune) []Completion) Editor {