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Improve reporting of undefined control sequences in preamble

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Fixes #11844
This commit is contained in:
Juergen Spitzmueller 2020-04-19 10:55:32 +02:00
parent 3f89dd0b48
commit 05c7c65d93
1 changed files with 17 additions and 0 deletions
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17
src/LaTeX.cpp
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@ -1051,10 +1051,15 @@ int LaTeX::scanLogFile(TeXErrors & terr)
// get the next line
int count = 0;
// We also collect intermediate lines
// This is needed for errors in preamble
string intermediate;
do {
if (!getline(ifs, tmp))
break;
tmp = rtrim(tmp, "\r");
if (!prefixIs(tmp, "l."))
intermediate += tmp;
// 15 is somewhat arbitrarily chosen, based on practice.
// We used 10 for 14 years and increased it to 15 when we
// saw one case.
@ -1076,6 +1081,15 @@ int LaTeX::scanLogFile(TeXErrors & terr)
sscanf(tmp.c_str(), "l.%d", &line);
// get the rest of the message:
string errstr(tmp, tmp.find(' '));
bool preamble_error = false;
if (suffixIs(errstr, "\\begin{document}")) {
// this is an error in preamble
// the real error is in the
// intermediate lines
errstr = intermediate;
tmp = intermediate;
preamble_error = true;
}
errstr += '\n';
getline(ifs, tmp);
tmp = rtrim(tmp, "\r");
@ -1088,6 +1102,9 @@ int LaTeX::scanLogFile(TeXErrors & terr)
getline(ifs, tmp);
tmp = rtrim(tmp, "\r");
}
if (preamble_error)
// Add a note that the error is to be found in preamble
errstr += "\n" + to_utf8(_("(NOTE: The erroneous command is in the preamble)"));
LYXERR(Debug::LATEX, "line: " << line << '\n'
<< "Desc: " << desc << '\n' << "Text: " << errstr);
if (line == last_line)