Fix #9209

Regression from #9137. The problem was that the Latex completion code might access an invalid index in the unicode string, if the previous character from a `\\` was a multibyte character.
JuliaLang · Dec 1, 2014 · 4f2681f · 4f2681f
1 parent 6b0fcce
commit 4f2681f
Showing 1 changed file with 1 addition and 1 deletion.
diff --git a/base/REPLCompletions.jl b/base/REPLCompletions.jl
@@ -166,7 +166,7 @@ end
 
 function latex_completions(string, pos)
     slashpos = rsearch(string, '\\', pos)
-    if rsearch(string, whitespace_chars, pos) < slashpos && !(1 < slashpos && (string[slashpos-1]=='\\'))
+    if rsearch(string, whitespace_chars, pos) < slashpos && !(1 < slashpos && (string[prevind(string, slashpos)]=='\\'))
         # latex symbol substitution
         s = string[slashpos:pos]
         latex = get(latex_symbols, s, "")