#include "support/mutex.h"
#include "support/ExceptionMessage.h"
-#include "support/bind.h"
-
using namespace std;
using namespace lyx::support;
InsetLabel * createLabel(Buffer * buf, docstring const & label_str)
{
if (label_str.empty())
- return 0;
+ return nullptr;
InsetCommandParams icp(LABEL_CODE);
icp["name"] = label_str;
return new InsetLabel(buf, icp);
InsetInclude::InsetInclude(Buffer * buf, InsetCommandParams const & p)
: InsetCommand(buf, p), include_label(uniqueID()),
preview_(make_unique<RenderMonitoredPreview>(this)), failedtoload_(false),
- set_label_(false), label_(0), child_buffer_(0), file_exist_(false)
+ set_label_(false), label_(nullptr), child_buffer_(nullptr), file_exist_(false),
+ recursion_error_(false)
{
preview_->connect([=](){ fileChanged(); });
InsetInclude::InsetInclude(InsetInclude const & other)
: InsetCommand(other), include_label(other.include_label),
preview_(make_unique<RenderMonitoredPreview>(this)), failedtoload_(false),
- set_label_(false), label_(0), child_buffer_(0), file_exist_(other.file_exist_)
+ set_label_(false), label_(nullptr), child_buffer_(nullptr),
+ file_exist_(other.file_exist_),recursion_error_(other.recursion_error_)
{
preview_->connect([=](){ fileChanged(); });
if (new_label.empty()) {
delete label_;
- label_ = 0;
+ label_ = nullptr;
} else {
docstring old_label;
if (label_)
void InsetInclude::setParams(InsetCommandParams const & p)
{
// invalidate the cache
- child_buffer_ = 0;
+ child_buffer_ = nullptr;
// reset in order to allow loading new file
failedtoload_ = false;
+ recursion_error_ = false;
InsetCommand::setParams(p);
set_label_ = false;
}
-Buffer * InsetInclude::getChildBuffer() const
-{
- Buffer * childBuffer = loadIfNeeded();
-
- // FIXME RECURSIVE INCLUDE
- // This isn't sufficient, as the inclusion could be downstream.
- // But it'll have to do for now.
- return (childBuffer == &buffer()) ? 0 : childBuffer;
-}
-
-
Buffer * InsetInclude::loadIfNeeded() const
{
// This is for background export and preview. We don't even want to
// Don't try to load it again if we failed before.
if (failedtoload_ || isVerbatim(params()) || isListings(params()))
- return 0;
+ return nullptr;
FileName const included_file = includedFileName(buffer(), params());
// Use cached Buffer if possible.
- if (child_buffer_ != 0) {
+ if (child_buffer_ != nullptr) {
if (theBufferList().isLoaded(child_buffer_)
// additional sanity check: make sure the Buffer really is
// associated with the file we want.
&& child_buffer_ == theBufferList().getBuffer(included_file))
return child_buffer_;
// Buffer vanished, so invalidate cache and try to reload.
- child_buffer_ = 0;
+ child_buffer_ = nullptr;
}
if (!isLyXFileName(included_file.absFileName()))
- return 0;
+ return nullptr;
Buffer * child = theBufferList().getBuffer(included_file);
+ if (checkForRecursiveInclude(child))
+ return child;
+
if (!child) {
// the readonly flag can/will be wrong, not anymore I think.
if (!included_file.exists()) {
failedtoload_ = true;
- return 0;
+ return nullptr;
}
child = theBufferList().newBuffer(included_file.absFileName());
if (!child)
// Buffer creation is not possible.
- return 0;
+ return nullptr;
+ buffer().pushIncludedBuffer(child);
// Set parent before loading, such that macros can be tracked
child->setParent(&buffer());
if (child->loadLyXFile() != Buffer::ReadSuccess) {
failedtoload_ = true;
- child->setParent(0);
+ child->setParent(nullptr);
//close the buffer we just opened
theBufferList().release(child);
- return 0;
+ buffer().popIncludedBuffer();
+ return nullptr;
}
+ buffer().popIncludedBuffer();
if (!child->errorList("Parse").empty()) {
// FIXME: Do something.
}
}
+bool InsetInclude::checkForRecursiveInclude(
+ Buffer const * cbuf, bool silent) const
+{
+ if (recursion_error_)
+ return true;
+
+ if (!buffer().isBufferIncluded(cbuf))
+ return false;
+
+ if (!silent) {
+ docstring const msg = _("The file\n%1$s\n has attempted to include itself.\n"
+ "The document set will not work properly until this is fixed!");
+ frontend::Alert::warning(_("Recursive Include"),
+ bformat(msg, from_utf8(cbuf->fileName().absFileName())));
+ }
+ recursion_error_ = true;
+ return true;
+}
+
+
void InsetInclude::latex(otexstream & os, OutputParams const & runparams) const
{
string incfile = ltrim(to_utf8(params()["filename"]));
}
FileName const included_file = includedFileName(buffer(), params());
-
- // Check we're not trying to include ourselves.
- // FIXME RECURSIVE INCLUDE
- // This isn't sufficient, as the inclusion could be downstream.
- // But it'll have to do for now.
- if (isInputOrInclude(params()) &&
- buffer().absFileName() == included_file.absFileName())
- {
- Alert::error(_("Recursive input"),
- bformat(_("Attempted to include file %1$s in itself! "
- "Ignoring inclusion."), from_utf8(incfile)));
- return;
- }
-
Buffer const * const masterBuffer = buffer().masterBuffer();
// if incfile is relative, make it relative to the master
// in a comment or doing a dryrun
return;
- if (isInputOrInclude(params()) &&
- isLyXFileName(included_file.absFileName())) {
- // if it's a LyX file and we're inputting or including,
- // try to load it so we can write the associated latex
-
- Buffer * tmp = loadIfNeeded();
- if (!tmp) {
- if (!runparams.silent) {
- docstring text = bformat(_("Could not load included "
- "file\n`%1$s'\n"
- "Please, check whether it actually exists."),
- included_file.displayName());
- throw ExceptionMessage(ErrorException, _("Error: "),
- text);
- }
- return;
- }
-
- if (!runparams.silent) {
- if (tmp->params().baseClass() != masterBuffer->params().baseClass()) {
- // FIXME UNICODE
- docstring text = bformat(_("Included file `%1$s'\n"
- "has textclass `%2$s'\n"
- "while parent file has textclass `%3$s'."),
- included_file.displayName(),
- from_utf8(tmp->params().documentClass().name()),
- from_utf8(masterBuffer->params().documentClass().name()));
- Alert::warning(_("Different textclasses"), text, true);
- }
-
- string const child_tf = tmp->params().useNonTeXFonts ? "true" : "false";
- string const master_tf = masterBuffer->params().useNonTeXFonts ? "true" : "false";
- if (tmp->params().useNonTeXFonts != masterBuffer->params().useNonTeXFonts) {
- docstring text = bformat(_("Included file `%1$s'\n"
- "has use-non-TeX-fonts set to `%2$s'\n"
- "while parent file has use-non-TeX-fonts set to `%3$s'."),
- included_file.displayName(),
- from_utf8(child_tf),
- from_utf8(master_tf));
- Alert::warning(_("Different use-non-TeX-fonts settings"), text, true);
- }
- else if (tmp->params().inputenc != masterBuffer->params().inputenc) {
- docstring text = bformat(_("Included file `%1$s'\n"
- "uses input encoding \"%2$s\" [%3$s]\n"
- "while parent file uses input encoding \"%4$s\" [%5$s]."),
- included_file.displayName(),
- _(tmp->params().inputenc),
- from_utf8(tmp->params().encoding().guiName()),
- _(masterBuffer->params().inputenc),
- from_utf8(masterBuffer->params().encoding().guiName()));
- Alert::warning(_("Different LaTeX input encodings"), text, true);
- }
-
- // Make sure modules used in child are all included in master
- // FIXME It might be worth loading the children's modules into the master
- // over in BufferParams rather than doing this check.
- LayoutModuleList const masterModules = masterBuffer->params().getModules();
- LayoutModuleList const childModules = tmp->params().getModules();
- LayoutModuleList::const_iterator it = childModules.begin();
- LayoutModuleList::const_iterator end = childModules.end();
- for (; it != end; ++it) {
- string const module = *it;
- LayoutModuleList::const_iterator found =
- find(masterModules.begin(), masterModules.end(), module);
- if (found == masterModules.end()) {
- docstring text = bformat(_("Included file `%1$s'\n"
- "uses module `%2$s'\n"
- "which is not used in parent file."),
- included_file.displayName(), from_utf8(module));
- Alert::warning(_("Module not found"), text, true);
- }
- }
- }
-
- tmp->markDepClean(masterBuffer->temppath());
-
- // Don't assume the child's format is latex
- string const inc_format = tmp->params().bufferFormat();
- FileName const tmpwritefile(changeExtension(writefile.absFileName(),
- theFormats().extension(inc_format)));
-
- // FIXME: handle non existing files
- // The included file might be written in a different encoding
- // and language.
- Encoding const * const oldEnc = runparams.encoding;
- Language const * const oldLang = runparams.master_language;
- // If the master uses non-TeX fonts (XeTeX, LuaTeX),
- // the children must be encoded in plain utf8!
- if (masterBuffer->params().useNonTeXFonts)
- runparams.encoding = encodings.fromLyXName("utf8-plain");
- else if (oldEnc)
- runparams.encoding = oldEnc;
- else runparams.encoding = &tmp->params().encoding();
- runparams.master_language = buffer().params().language;
- runparams.par_begin = 0;
- runparams.par_end = tmp->paragraphs().size();
- runparams.is_child = true;
- Buffer::ExportStatus retval =
- tmp->makeLaTeXFile(tmpwritefile, masterFileName(buffer()).
- onlyPath().absFileName(), runparams, Buffer::OnlyBody);
- if (retval == Buffer::ExportKilled && buffer().isClone() &&
- buffer().isExporting()) {
- // We really shouldn't get here, I don't think.
- LYXERR0("No conversion exception?");
- throw ConversionException();
- }
- else if (retval != Buffer::ExportSuccess) {
- if (!runparams.silent) {
- docstring msg = bformat(_("Included file `%1$s' "
- "was not exported correctly.\n "
- "LaTeX export is probably incomplete."),
- included_file.displayName());
- ErrorList const & el = tmp->errorList("Export");
- if (!el.empty())
- msg = bformat(from_ascii("%1$s\n\n%2$s\n\n%3$s"),
- msg, el.begin()->error, el.begin()->description);
- throw ExceptionMessage(ErrorException, _("Error: "), msg);
- }
- }
- runparams.encoding = oldEnc;
- runparams.master_language = oldLang;
- runparams.is_child = false;
-
- // If needed, use converters to produce a latex file from the child
- if (tmpwritefile != writefile) {
- ErrorList el;
- Converters::RetVal const conv_retval =
- theConverters().convert(tmp, tmpwritefile, writefile,
- included_file, inc_format, tex_format, el);
- if (conv_retval == Converters::KILLED && buffer().isClone() &&
- buffer().isExporting()) {
- // We really shouldn't get here, I don't think.
- LYXERR0("No conversion exception?");
- throw ConversionException();
- } else if (conv_retval != Converters::SUCCESS && !runparams.silent) {
- docstring msg = bformat(_("Included file `%1$s' "
- "was not exported correctly.\n "
- "LaTeX export is probably incomplete."),
- included_file.displayName());
- if (!el.empty())
- msg = bformat(from_ascii("%1$s\n\n%2$s\n\n%3$s"),
- msg, el.begin()->error, el.begin()->description);
- throw ExceptionMessage(ErrorException, _("Error: "), msg);
- }
- }
- } else {
+ if (!isInputOrInclude(params()) ||
+ !isLyXFileName(included_file.absFileName())) {
// In this case, it's not a LyX file, so we copy the file
// to the temp dir, so that .aux files etc. are not created
// in the original dir. Files included by this file will be
// input@path, see ../Buffer.cpp.
unsigned long const checksum_in = included_file.checksum();
unsigned long const checksum_out = writefile.checksum();
-
if (checksum_in != checksum_out) {
if (!included_file.copyTo(writefile)) {
// FIXME UNICODE
to_utf8(bformat(_("Could not copy the file\n%1$s\n"
"into the temporary directory."),
from_utf8(included_file.absFileName()))));
- return;
}
}
+ return;
+ }
+
+
+ // it's a LyX file and we're inputting or including, so
+ // try to load it so we can write the associated latex
+ Buffer * tmp = loadIfNeeded();
+ if (!tmp) {
+ if (!runparams.silent) {
+ docstring text = bformat(_("Could not load included "
+ "file\n`%1$s'\n"
+ "Please, check whether it actually exists."),
+ included_file.displayName());
+ throw ExceptionMessage(ErrorException, _("Error: "),
+ text);
+ }
+ return;
+ }
+
+ if (recursion_error_)
+ return;
+
+ if (!runparams.silent) {
+ if (tmp->params().baseClass() != masterBuffer->params().baseClass()) {
+ // FIXME UNICODE
+ docstring text = bformat(_("Included file `%1$s'\n"
+ "has textclass `%2$s'\n"
+ "while parent file has textclass `%3$s'."),
+ included_file.displayName(),
+ from_utf8(tmp->params().documentClass().name()),
+ from_utf8(masterBuffer->params().documentClass().name()));
+ Alert::warning(_("Different textclasses"), text, true);
+ }
+
+ string const child_tf = tmp->params().useNonTeXFonts ? "true" : "false";
+ string const master_tf = masterBuffer->params().useNonTeXFonts ? "true" : "false";
+ if (tmp->params().useNonTeXFonts != masterBuffer->params().useNonTeXFonts) {
+ docstring text = bformat(_("Included file `%1$s'\n"
+ "has use-non-TeX-fonts set to `%2$s'\n"
+ "while parent file has use-non-TeX-fonts set to `%3$s'."),
+ included_file.displayName(),
+ from_utf8(child_tf),
+ from_utf8(master_tf));
+ Alert::warning(_("Different use-non-TeX-fonts settings"), text, true);
+ }
+ else if (tmp->params().inputenc != masterBuffer->params().inputenc) {
+ docstring text = bformat(_("Included file `%1$s'\n"
+ "uses input encoding \"%2$s\" [%3$s]\n"
+ "while parent file uses input encoding \"%4$s\" [%5$s]."),
+ included_file.displayName(),
+ _(tmp->params().inputenc),
+ from_utf8(tmp->params().encoding().guiName()),
+ _(masterBuffer->params().inputenc),
+ from_utf8(masterBuffer->params().encoding().guiName()));
+ Alert::warning(_("Different LaTeX input encodings"), text, true);
+ }
+
+ // Make sure modules used in child are all included in master
+ // FIXME It might be worth loading the children's modules into the master
+ // over in BufferParams rather than doing this check.
+ LayoutModuleList const masterModules = masterBuffer->params().getModules();
+ LayoutModuleList const childModules = tmp->params().getModules();
+ LayoutModuleList::const_iterator it = childModules.begin();
+ LayoutModuleList::const_iterator end = childModules.end();
+ for (; it != end; ++it) {
+ string const module = *it;
+ LayoutModuleList::const_iterator found =
+ find(masterModules.begin(), masterModules.end(), module);
+ if (found == masterModules.end()) {
+ docstring text = bformat(_("Included file `%1$s'\n"
+ "uses module `%2$s'\n"
+ "which is not used in parent file."),
+ included_file.displayName(), from_utf8(module));
+ Alert::warning(_("Module not found"), text, true);
+ }
+ }
+ }
+
+ tmp->markDepClean(masterBuffer->temppath());
+
+ // Don't assume the child's format is latex
+ string const inc_format = tmp->params().bufferFormat();
+ FileName const tmpwritefile(changeExtension(writefile.absFileName(),
+ theFormats().extension(inc_format)));
+
+ // FIXME: handle non existing files
+ // The included file might be written in a different encoding
+ // and language.
+ Encoding const * const oldEnc = runparams.encoding;
+ Language const * const oldLang = runparams.master_language;
+ // If the master uses non-TeX fonts (XeTeX, LuaTeX),
+ // the children must be encoded in plain utf8!
+ if (masterBuffer->params().useNonTeXFonts)
+ runparams.encoding = encodings.fromLyXName("utf8-plain");
+ else if (oldEnc)
+ runparams.encoding = oldEnc;
+ else runparams.encoding = &tmp->params().encoding();
+ runparams.master_language = buffer().params().language;
+ runparams.par_begin = 0;
+ runparams.par_end = tmp->paragraphs().size();
+ runparams.is_child = true;
+ Buffer::ExportStatus retval =
+ tmp->makeLaTeXFile(tmpwritefile, masterFileName(buffer()).
+ onlyPath().absFileName(), runparams, Buffer::OnlyBody);
+ if (retval == Buffer::ExportKilled && buffer().isClone() &&
+ buffer().isExporting()) {
+ // We really shouldn't get here, I don't think.
+ LYXERR0("No conversion exception?");
+ throw ConversionException();
+ }
+ else if (retval != Buffer::ExportSuccess) {
+ if (!runparams.silent) {
+ docstring msg = bformat(_("Included file `%1$s' "
+ "was not exported correctly.\n "
+ "LaTeX export is probably incomplete."),
+ included_file.displayName());
+ ErrorList const & el = tmp->errorList("Export");
+ if (!el.empty())
+ msg = bformat(from_ascii("%1$s\n\n%2$s\n\n%3$s"),
+ msg, el.begin()->error, el.begin()->description);
+ throw ExceptionMessage(ErrorException, _("Error: "), msg);
+ }
+ }
+ runparams.encoding = oldEnc;
+ runparams.master_language = oldLang;
+ runparams.is_child = false;
+
+ // If needed, use converters to produce a latex file from the child
+ if (tmpwritefile != writefile) {
+ ErrorList el;
+ Converters::RetVal const conv_retval =
+ theConverters().convert(tmp, tmpwritefile, writefile,
+ included_file, inc_format, tex_format, el);
+ if (conv_retval == Converters::KILLED && buffer().isClone() &&
+ buffer().isExporting()) {
+ // We really shouldn't get here, I don't think.
+ LYXERR0("No conversion exception?");
+ throw ConversionException();
+ } else if (conv_retval != Converters::SUCCESS && !runparams.silent) {
+ docstring msg = bformat(_("Included file `%1$s' "
+ "was not exported correctly.\n "
+ "LaTeX export is probably incomplete."),
+ included_file.displayName());
+ if (!el.empty())
+ msg = bformat(from_ascii("%1$s\n\n%2$s\n\n%3$s"),
+ msg, el.begin()->error, el.begin()->description);
+ throw ExceptionMessage(ErrorException, _("Error: "), msg);
+ }
}
}
// In the other cases, we will generate the HTML and include it.
- // Check we're not trying to include ourselves.
- // FIXME RECURSIVE INCLUDE
- if (buffer().absFileName() == included_file.absFileName()) {
- Alert::error(_("Recursive input"),
- bformat(_("Attempted to include file %1$s in itself! "
- "Ignoring inclusion."), ltrim(params()["filename"])));
- return docstring();
- }
-
Buffer const * const ibuf = loadIfNeeded();
if (!ibuf)
return docstring();
+ if (recursion_error_)
+ return docstring();
+
// are we generating only some paragraphs, or all of them?
bool const all_pars = !rp.dryrun ||
(rp.par_begin == 0 &&
<< from_utf8(included_file.absFileName())
<< XHTMLStream::ESCAPE_NONE
<< " -->";
+
return docstring();
}
os << str;
return str.size();
}
+
+ if (recursion_error_)
+ return 0;
+
writePlaintextFile(*ibuf, os, op);
return 0;
}
return 0;
string const included_file = includedFileName(buffer(), params()).absFileName();
-
- // Check we're not trying to include ourselves.
- // FIXME RECURSIVE INCLUDE
- // This isn't sufficient, as the inclusion could be downstream.
- // But it'll have to do for now.
- if (buffer().absFileName() == included_file) {
- Alert::error(_("Recursive input"),
- bformat(_("Attempted to include file %1$s in itself! "
- "Ignoring inclusion."), from_utf8(incfile)));
- return 0;
- }
-
string exppath = incfile;
if (!runparams.export_folder.empty()) {
exppath = makeAbsPath(exppath, runparams.export_folder).realPath();
Buffer * tmp = loadIfNeeded();
if (tmp) {
+ if (recursion_error_)
+ return 0;
+
string const mangled = writefile.mangledFileName();
writefile = makeAbsPath(mangled,
buffer().masterBuffer()->temppath());
// Load the file in the include if it needs
// to be loaded:
Buffer * const tmp = loadIfNeeded();
- if (tmp) {
- // the file is loaded
- // make sure the buffer isn't us
- // FIXME RECURSIVE INCLUDES
- // This is not sufficient, as recursive includes could be
- // more than a file away. But it will do for now.
- if (tmp && tmp != &buffer()) {
- // We must temporarily change features.buffer,
- // otherwise it would always be the master buffer,
- // and nested includes would not work.
- features.setBuffer(*tmp);
- // Maybe this is already a child
- bool const is_child =
- features.runparams().is_child;
- features.runparams().is_child = true;
- tmp->validate(features);
- features.runparams().is_child = is_child;
- features.setBuffer(buffer());
- }
- }
+ if (!tmp)
+ return;
+
+ // the file is loaded
+ if (checkForRecursiveInclude(tmp))
+ return;
+ buffer().pushIncludedBuffer(tmp);
+
+ // We must temporarily change features.buffer,
+ // otherwise it would always be the master buffer,
+ // and nested includes would not work.
+ features.setBuffer(*tmp);
+ // Maybe this is already a child
+ bool const is_child =
+ features.runparams().is_child;
+ features.runparams().is_child = true;
+ tmp->validate(features);
+ features.runparams().is_child = is_child;
+ features.setBuffer(buffer());
+
+ buffer().popIncludedBuffer();
}
void InsetInclude::collectBibKeys(InsetIterator const & /*di*/, FileNameList & checkedFiles) const
{
- Buffer * child = loadIfNeeded();
- if (!child)
+ Buffer * ibuf = loadIfNeeded();
+ if (!ibuf)
return;
- // FIXME RECURSIVE INCLUDE
- // This isn't sufficient, as the inclusion could be downstream.
- // But it'll have to do for now.
- if (child == &buffer())
+
+ if (checkForRecursiveInclude(ibuf))
return;
- child->collectBibKeys(checkedFiles);
+ buffer().pushIncludedBuffer(ibuf);
+ ibuf->collectBibKeys(checkedFiles);
+ buffer().popIncludedBuffer();
}
} else {
if (!set_label_) {
set_label_ = true;
- button_.update(screenLabel(), true, false, !file_exist_);
+ button_.update(screenLabel(), true, false, !file_exist_ || recursion_error_);
}
button_.metrics(mi, dim);
}
otexstream os(ods);
// We don't need to set runparams.encoding since this will be done
// by latex() anyway.
- OutputParams runparams(0);
+ OutputParams runparams(nullptr);
runparams.flavor = OutputParams::LATEX;
runparams.for_preview = true;
inset.latex(os, runparams);
b.pushItem(cpit, screenLabel(), output_active);
b.pop();
} else {
- Buffer const * const childbuffer = getChildBuffer();
+ Buffer const * const childbuffer = loadIfNeeded();
TocBuilder & b = backend.builder("child");
docstring str = childbuffer ? childbuffer->fileName().displayName()
if (!childbuffer)
return;
+ if (checkForRecursiveInclude(childbuffer))
+ return;
+ buffer().pushIncludedBuffer(childbuffer);
// Update the child's tocBackend. The outliner uses the master's, but
// the navigation menu uses the child's.
childbuffer->tocBackend().update(output_active, utype);
// Include Tocs from children
childbuffer->inset().addToToc(DocIterator(), output_active, utype,
backend);
- //Copy missing outliner names (though the user has been warned against
- //having different document class and module selection between master
- //and child).
- for (pair<string, docstring> const & name
+ buffer().popIncludedBuffer();
+ // Copy missing outliner names (though the user has been warned against
+ // having different document class and module selection between master
+ // and child).
+ for (auto const & name
: childbuffer->params().documentClass().outlinerNames())
backend.addName(name.first, translateIfPossible(name.second));
}
void InsetInclude::updateBuffer(ParIterator const & it, UpdateType utype, bool const deleted)
{
file_exist_ = includedFileExist();
-
- button_.update(screenLabel(), true, false, !file_exist_);
-
- Buffer const * const childbuffer = getChildBuffer();
+ Buffer const * const childbuffer = loadIfNeeded();
if (childbuffer) {
- childbuffer->updateBuffer(Buffer::UpdateChildOnly, utype);
+ if (!checkForRecursiveInclude(childbuffer))
+ childbuffer->updateBuffer(Buffer::UpdateChildOnly, utype);
+ button_.update(screenLabel(), true, false, recursion_error_);
return;
}
+
+ button_.update(screenLabel(), true, false, !file_exist_);
+
if (!isListings(params()))
return;
projects / lyx.git / blobdiff