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FindAdv: Omit possible empty patterns

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Normally this is done by the GUI, but searching for e.g. LyX-Comment
allows empty patterns.
This commit is contained in:
Kornel Benko 2022-04-03 13:21:02 +02:00
parent e7ed8213ac
commit 4125f6a9d3
1 changed files with 15 additions and 5 deletions
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20
src/lyxfind.cpp
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@ -2740,7 +2740,7 @@ void LatexInfo::buildKeys(bool isPatternString)
makeKey("trianglerightpar|hexagonpar|starpar", KeyInfo(KeyInfo::isStandard, 1, true), isPatternString);
makeKey("triangleuppar|triangledownpar|droppar", KeyInfo(KeyInfo::isStandard, 1, true), isPatternString);
makeKey("triangleleftpar|shapepar|dropuppar", KeyInfo(KeyInfo::isStandard, 1, true), isPatternString);
makeKey("hphantom|vphantom|footnote|shortcut|include|includegraphics", KeyInfo(KeyInfo::isStandard, 1, true), isPatternString);
makeKey("hphantom|vphantom|note|footnote|shortcut|include|includegraphics", KeyInfo(KeyInfo::isStandard, 1, true), isPatternString);
makeKey("parbox", KeyInfo(KeyInfo::doRemove, 1, true), isPatternString);
// like ('tiny{}' or '\tiny ' ... )
makeKey("footnotesize|tiny|scriptsize|small|large|Large|LARGE|huge|Huge", KeyInfo(KeyInfo::isSize, 0, false), isPatternString);
@ -3322,10 +3322,7 @@ string splitOnKnownMacros(string par, bool isPatternString)
(void) li.process(os, firstKey);
}
s = os.str();
if (s.empty()) {
// return string definitelly impossible to match
s = "\\foreignlanguage{ignore}{ }";
}
// return string definitelly impossible to match, but should be known
}
else
s = par; /* no known macros found */
@ -3439,6 +3436,11 @@ static bool previous_single_replace = true;
void MatchStringAdv::CreateRegexp(FindAndReplaceOptions const & opt, string regexp_str, string regexp2_str, string par_as_string)
{
if (regexp_str.empty() || regexp2_str.empty()) {
regexIsValid = false;
regexError = "Invalid empty regex";
return;
}
#if QTSEARCH
// Handle \w properly
QRegularExpression::PatternOptions popts = QRegularExpression::UseUnicodePropertiesOption | QRegularExpression::MultilineOption;
@ -3526,6 +3528,10 @@ MatchStringAdv::MatchStringAdv(lyx::Buffer & buf, FindAndReplaceOptions & opt)
{
Buffer & find_buf = *theBufferList().getBuffer(FileName(to_utf8(opt.find_buf_name)), true);
docstring const & ds = stringifySearchBuffer(find_buf, opt);
if (ds.empty() ) {
CreateRegexp(opt, "", "", "");
return;
}
use_regexp = lyx::to_utf8(ds).find("\\regexp{") != std::string::npos;
if (opt.replace_all && previous_single_replace) {
previous_single_replace = false;
@ -3543,6 +3549,10 @@ MatchStringAdv::MatchStringAdv(lyx::Buffer & buf, FindAndReplaceOptions & opt)
size_t lead_size = 0;
// correct the language settings
par_as_string = correctlanguagesetting(par_as_string, true, !opt.ignoreformat, &buf);
if (par_as_string.empty()) {
CreateRegexp(opt, "", "", "");
return;
}
opt.matchAtStart = false;
if (!use_regexp) {
identifyClosing(par_as_string); // Removes math closings ($, ], ...) at end of string