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Don't consider empty strings or strings beginning with numbers as variable names.

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This commit is contained in:
Scott Olson 2016-02-14 01:50:47 -06:00
parent 2111098a3a
commit f30fd9c47b
1 changed files with 3 additions and 2 deletions
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5
nix-repl.cc
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@ -250,8 +250,9 @@ static int runProgram(const string & program, const Strings & args)
bool isVarName(const string & s) bool isVarName(const string & s)
{ {
if (s.size() > 0 && (s[0] == '-' || s[0] == '\'')) if (s.size() == 0) return false;
return false; char c = s[0];
if ((c >= '0' && c <= '9') || c == '-' || c == '\'') return false;
for (auto & i : s) for (auto & i : s)
if (!((i >= 'a' && i <= 'z') || if (!((i >= 'a' && i <= 'z') ||
(i >= 'A' && i <= 'Z') || (i >= 'A' && i <= 'Z') ||