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Fix autocomplete bug

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This commit is contained in:
Alan Bernstein 2017-04-27 19:02:24 -05:00
parent 3fb3ceac3e
commit d1758bec4e
1 changed files with 9 additions and 4 deletions
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13
webui/assets/main.js
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@ -70,7 +70,9 @@ class REPL {
if (e.keyCode == keys.TAB) {
e.preventDefault()
// extract word ending at cursor
// extract word fragment ending at cursor. a word fragment:
// - starts with last nonalpha character before cursor (or beginning of string)
// - ends at cursor
var word_start = this.input.selectionEnd-1
while(word_start>0) {
var c = this.input.value.charCodeAt(word_start)
@ -86,10 +88,13 @@ class REPL {
// this just stops at the first match
for(var keyword in keywords) {
if(keyword.startsWith(input_word)){
var cursor_pos = this.input.selectionEnd
var completion = keyword.substring(input_word.length)
this.input.value += completion
var pos = this.input.value.length - keywords[keyword]
this.input.setSelectionRange(pos, pos)
var before = this.input.value.substring(0, cursor_pos)
var after = this.input.value.substring(cursor_pos)
this.input.value = before + completion + after
var new_pos = cursor_pos + completion.length - keywords[keyword]
this.input.setSelectionRange(new_pos, new_pos)
break
}
}