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Do not search for empty string

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This commit is contained in:
Juergen Spitzmueller 2012-09-17 09:32:47 +02:00
parent e8a01d099a
commit ec078bd29d
1 changed files with 2 additions and 1 deletions
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3
src/LaTeX.cpp
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@ -1044,7 +1044,7 @@ int iterateLine(string const token, regex const reg, string const closing,
// result = -1 means we did not find a fragment!
int result = -1;
int last_match_pos = -1;
if (token.find(last_match) != string::npos)
if (!last_match.empty() && token.find(last_match) != string::npos)
last_match_pos = int(token.find(last_match));
if (fragment) {
if (last_match_pos > fragment_pos)
@ -1054,6 +1054,7 @@ int iterateLine(string const token, regex const reg, string const closing,
} else
if (last_match_pos < fragment_pos)
result = fragment_pos;
return result;
}