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9 years agopt_BR.gmo missed at Uwe's commit.
Pavel Sanda [Sun, 3 May 2015 01:07:47 +0000 (18:07 -0700)]
pt_BR.gmo missed at Uwe's commit.

9 years agoAdd layouttranslations from pt_BR.
Pavel Sanda [Sun, 3 May 2015 00:41:08 +0000 (17:41 -0700)]
Add layouttranslations from pt_BR.

9 years agopt_BR.po: new translation by Georger Araujo
Uwe Stöhr [Sun, 3 May 2015 00:22:55 +0000 (02:22 +0200)]
pt_BR.po: new translation by Georger Araujo

GPL statement was sent to the po-updates list and will be send also to the lyx-devel list soon

9 years agolyx2lyx/lyx_2_2.py: correct a description
Uwe Stöhr [Sun, 3 May 2015 00:16:32 +0000 (02:16 +0200)]
lyx2lyx/lyx_2_2.py: correct a description

9 years agoar.po: another update from Hatim
Uwe Stöhr [Sat, 2 May 2015 23:57:48 +0000 (01:57 +0200)]
ar.po: another update from Hatim

9 years agoar.po: update from Hatim for master
Uwe Stöhr [Sat, 2 May 2015 23:52:42 +0000 (01:52 +0200)]
ar.po: update from Hatim for master

9 years agoDo not output \noindent if paragraph does not support indentation change
Juergen Spitzmueller [Sat, 2 May 2015 14:34:57 +0000 (16:34 +0200)]
Do not output \noindent if paragraph does not support indentation change

Part of: #7320.

9 years agoRemove unused header
Juergen Spitzmueller [Sat, 2 May 2015 12:37:23 +0000 (14:37 +0200)]
Remove unused header

9 years agosign.
Juergen Spitzmueller [Sat, 2 May 2015 09:38:46 +0000 (11:38 +0200)]
sign.

9 years agoUse EmptyTable widget in TabularCreate dialog.
Juergen Spitzmueller [Fri, 1 May 2015 16:11:57 +0000 (18:11 +0200)]
Use EmptyTable widget in TabularCreate dialog.

Fixes #3155.

9 years agoFix usability of EmptyTable widget.
Juergen Spitzmueller [Fri, 1 May 2015 16:10:36 +0000 (18:10 +0200)]
Fix usability of EmptyTable widget.

Fixes #3919 (math matrix dialog UX issues).

9 years agoProperly fix #6369
Juergen Spitzmueller [Thu, 30 Apr 2015 14:48:55 +0000 (16:48 +0200)]
Properly fix #6369

Avoid that \newcommand[x] definitions of math macros are pushed multiple
times to the preview loader.

Redefinitions (via \renewcommand[x]) are properly handled.

9 years agopdfform.module: change whitespace as requested by Jürgen
Uwe Stöhr [Wed, 29 Apr 2015 23:23:47 +0000 (01:23 +0200)]
pdfform.module: change whitespace as requested by Jürgen

9 years agoMerge branch 'master' of git.lyx.org:lyx
Uwe Stöhr [Wed, 29 Apr 2015 23:23:03 +0000 (01:23 +0200)]
Merge branch 'master' of git.lyx.org:lyx

9 years agoEmbeddedObjects.lyx: improve description of \cmidrule
Uwe Stöhr [Wed, 29 Apr 2015 23:22:50 +0000 (01:22 +0200)]
EmbeddedObjects.lyx: improve description of \cmidrule

9 years agoDo not show previews of snippets that produce latex errors
Enrico Forestieri [Wed, 29 Apr 2015 22:35:28 +0000 (00:35 +0200)]
Do not show previews of snippets that produce latex errors

9 years agoPDF-form.lyx: add example how to validate numbers
Uwe Stöhr [Wed, 29 Apr 2015 22:17:39 +0000 (00:17 +0200)]
PDF-form.lyx: add example how to validate numbers

9 years agoPDF-form.lyx: some more info and few adaptions
Uwe Stöhr [Wed, 29 Apr 2015 20:06:00 +0000 (22:06 +0200)]
PDF-form.lyx: some more info and few adaptions

- pdfform.module: a fix

9 years agoForgot to escape the dot
Enrico Forestieri [Wed, 29 Apr 2015 16:04:51 +0000 (18:04 +0200)]
Forgot to escape the dot

9 years agoCorrect progress message
Enrico Forestieri [Wed, 29 Apr 2015 16:00:28 +0000 (18:00 +0200)]
Correct progress message

Now we also process with pdflatex the previews requiring hyperref.

9 years agoDetect hyperref when generating previews
Enrico Forestieri [Wed, 29 Apr 2015 15:29:27 +0000 (17:29 +0200)]
Detect hyperref when generating previews

If use of hyperref is detected, the postscript route is not attempted
(because we know it will fail) and the PDF route is directly chosen.
Also account for all upper case extensions for pdflatex image files.

9 years agoCorrectly indicate the failing converter
Enrico Forestieri [Wed, 29 Apr 2015 14:20:27 +0000 (16:20 +0200)]
Correctly indicate the failing converter

If epstopdf fails, pdftocairo is not called but the warning points
the finger to it. Also correctly indicate the failing file.

9 years agoAmend 75f7eafd
Enrico Forestieri [Wed, 29 Apr 2015 11:59:28 +0000 (13:59 +0200)]
Amend 75f7eafd

Was forgetting this last bit from 64e0c558. Also give a message such
that the user is informed that not everything is lost if latex fails.
With this, the previews are generated also when the document directly
specifies a specific pdf output format.

9 years agoTry even harder to obtain an instant preview
Enrico Forestieri [Wed, 29 Apr 2015 10:28:51 +0000 (12:28 +0200)]
Try even harder to obtain an instant preview

This is a followup commit to 691fdea3 and restores the behavior of the
script as it was intended before 64e0c558, other than taking into account
possible inclusion of files that only pdflatex can process and the
possibility of multiple defined math macros.
The instant previews in the math manual now work again.

9 years agopdfform.module: a simplification
Uwe Stöhr [Tue, 28 Apr 2015 23:56:43 +0000 (01:56 +0200)]
pdfform.module: a simplification

- PDF-form.lyx: update accordingly and a fix

9 years agoPreserve numbering of previewed math formulas on zoom
Enrico Forestieri [Tue, 28 Apr 2015 20:06:58 +0000 (22:06 +0200)]
Preserve numbering of previewed math formulas on zoom

The preview snippets are cached in a seemingly random order, such
that, when regenerating them on zoom, the math previews would be
numbered accordingly. Hence, we have to go through the insets to
get the correct order. This is a bit slower but unavoidable.

9 years agoFix broken lilipond links.
Pavel Sanda [Tue, 28 Apr 2015 16:32:09 +0000 (09:32 -0700)]
Fix broken lilipond links.

9 years agopdfform.module: a fix and a new style
Uwe Stöhr [Tue, 28 Apr 2015 00:00:53 +0000 (02:00 +0200)]
pdfform.module: a fix and a new style

- PDF-form.lyx: describe how to customize PDF action buttons and some other refinement and restructuring

9 years agoPDF-form.lyx: improvements
Uwe Stöhr [Mon, 27 Apr 2015 20:29:48 +0000 (22:29 +0200)]
PDF-form.lyx: improvements

- enrich the examples
- add info about naming
- formatting fixes to improve the layout of the PDF
- make the document compilable also if the package insdljs is not installed

9 years agoUse pdftocairo (if available) for instant preview.
Enrico Forestieri [Mon, 27 Apr 2015 19:37:26 +0000 (21:37 +0200)]
Use pdftocairo (if available) for instant preview.

If pdftocairo is detected, it is used for generating bitmaps in the
legacy method route in preference to ghostscript. This is justified
by the fact that the conversion is 4 to 5 times faster and the
quality of the generated images is superior.

9 years agoTry hard to obtain an instant preview.
Enrico Forestieri [Mon, 27 Apr 2015 15:22:25 +0000 (17:22 +0200)]
Try hard to obtain an instant preview.

When the dvipng route is selected and latex fails, the lyxpreview2bitmap.py
script simply bails out. The failure may be due to using a specific pdf
only feature in ERT (for example, the inclusion of a pdf image).
In this case the procedure may succeed simply trying to use pdflatex
and the legacy conversion method.

9 years agoUpdate sk.po
Kornel Benko [Mon, 27 Apr 2015 13:36:48 +0000 (15:36 +0200)]
Update sk.po

9 years agoFix instant preview for documents not specifying a specific output format.
Enrico Forestieri [Mon, 27 Apr 2015 10:27:42 +0000 (12:27 +0200)]
Fix instant preview for documents not specifying a specific output format.

Fixes the regression introduced at 0bb378ba.

9 years agoFollow-up on Uwe's whitespace amendments.
Juergen Spitzmueller [Mon, 27 Apr 2015 08:04:15 +0000 (10:04 +0200)]
Follow-up on Uwe's whitespace amendments.

9 years agopdfform.module: correct the description
Uwe Stöhr [Mon, 27 Apr 2015 01:00:27 +0000 (03:00 +0200)]
pdfform.module: correct the description

9 years agopdfform.module: new module to create PDF forms
Uwe Stöhr [Mon, 27 Apr 2015 00:56:25 +0000 (02:56 +0200)]
pdfform.module: new module to create PDF forms

- PDF-form.lyx: example file describing the module

No special package is required since the PDF form features are provided by hyperref.

9 years agoPDF-comment.lyx: some fixes
Uwe Stöhr [Mon, 27 Apr 2015 00:33:38 +0000 (02:33 +0200)]
PDF-comment.lyx: some fixes

9 years agoFix bug #7850 (Preview of inline math misaligned)
Enrico Forestieri [Sun, 26 Apr 2015 17:08:16 +0000 (19:08 +0200)]
Fix bug #7850 (Preview of inline math misaligned)

9 years agopdfcomment.module: reintroduce whitespace mixture because of bug #9518
Uwe Stöhr [Sun, 26 Apr 2015 16:25:20 +0000 (18:25 +0200)]
pdfcomment.module: reintroduce whitespace mixture because of bug #9518

9 years agoUse namespace.
Juergen Spitzmueller [Sun, 26 Apr 2015 14:49:16 +0000 (16:49 +0200)]
Use namespace.

9 years agoAdd Jari-Matti Mäkelä to the credits
Juergen Spitzmueller [Sun, 26 Apr 2015 11:39:37 +0000 (13:39 +0200)]
Add Jari-Matti Mäkelä to the credits

9 years agopdfcomment.module: promote our example file in the description
Uwe Stöhr [Sun, 26 Apr 2015 11:41:44 +0000 (13:41 +0200)]
pdfcomment.module: promote our example file in the description

- PDF-comment.lyx: port recent typo fixes to master

9 years agofi.po: another update by Jari-Matti Mäkelä
Juergen Spitzmueller [Sun, 26 Apr 2015 11:25:38 +0000 (13:25 +0200)]
fi.po: another update by Jari-Matti Mäkelä

9 years agopdfcomment.module: uniform whitespace
Uwe Stöhr [Sun, 26 Apr 2015 02:23:10 +0000 (04:23 +0200)]
pdfcomment.module: uniform whitespace

the file used spaces and tabs, now it uses only tabs for the whitespace

9 years agoUpdate previews when going to a bookmark (#6173)
Scott Kostyshak [Wed, 22 Apr 2015 01:11:17 +0000 (21:11 -0400)]
Update previews when going to a bookmark (#6173)

Note that I move the definition of cur up because we need to check if
it changed before the return. I also removed the const because
notifyCursorLeavesOrEnters() requires that.

This commit probably fixes other issues for any inset that defines
notifyCursorLeaves().

This fixes only part of #6173.

9 years agoWhitespace
Scott Kostyshak [Fri, 24 Apr 2015 04:10:00 +0000 (00:10 -0400)]
Whitespace

9 years agoFeynmanDiagrams.lyx: rename German version
Uwe Stöhr [Sat, 25 Apr 2015 15:08:54 +0000 (17:08 +0200)]
FeynmanDiagrams.lyx: rename German version

it turned out that the example files that should appear in LyX's Help menu must have the same name as their English versions

9 years agoFeynman-Diagramme.lyx: new German translation
Uwe Stöhr [Sat, 25 Apr 2015 15:01:09 +0000 (17:01 +0200)]
Feynman-Diagramme.lyx: new German translation

FeynmanDiagrams.lyx: an adjustment and added the missing note to the French translation

9 years agoFeynmanDiagrams.lyx: fix some typos and expressions
Uwe Stöhr [Sat, 25 Apr 2015 00:03:19 +0000 (02:03 +0200)]
FeynmanDiagrams.lyx: fix some typos and expressions

9 years agoinstaller: preparation and updates for upcoming LyX 2.1.4 release
Uwe Stöhr [Fri, 24 Apr 2015 21:53:15 +0000 (23:53 +0200)]
installer: preparation and updates for upcoming LyX 2.1.4 release

9 years agoDon't write \PassThruChars if it is empty.
Richard Heck [Fri, 24 Apr 2015 16:49:26 +0000 (12:49 -0400)]
Don't write \PassThruChars if it is empty.

9 years agoCmake build: Enable debug output for check_layouts.
Kornel Benko [Fri, 24 Apr 2015 09:20:33 +0000 (11:20 +0200)]
Cmake build: Enable debug output for check_layouts.

9 years agoAttempt to fix (mixed) line terminators.
Juergen Spitzmueller [Thu, 23 Apr 2015 09:13:28 +0000 (11:13 +0200)]
Attempt to fix (mixed) line terminators.

9 years agoUpdate the Finnish localization
Juergen Spitzmueller [Thu, 23 Apr 2015 08:25:15 +0000 (10:25 +0200)]
Update the Finnish localization

Patch by Jari-Matti Mäkelä

9 years agoAssert if unknown argument to internal paste
Scott Kostyshak [Wed, 22 Apr 2015 03:22:21 +0000 (23:22 -0400)]
Assert if unknown argument to internal paste

9 years agoFix bug #8258 (Zoom of editor doesn't zoom instant preview)
Enrico Forestieri [Tue, 21 Apr 2015 21:57:53 +0000 (23:57 +0200)]
Fix bug #8258 (Zoom of editor doesn't zoom instant preview)

9 years agoUpdate sk.po
Kornel Benko [Tue, 21 Apr 2015 20:51:53 +0000 (22:51 +0200)]
Update sk.po

9 years agode.po: typo
Juergen Spitzmueller [Tue, 21 Apr 2015 18:57:28 +0000 (20:57 +0200)]
de.po: typo

9 years agode.po
Juergen Spitzmueller [Tue, 21 Apr 2015 18:43:44 +0000 (20:43 +0200)]
de.po

9 years agoDocument new Glosse inset and some further minor changes.
Juergen Spitzmueller [Tue, 21 Apr 2015 18:38:47 +0000 (20:38 +0200)]
Document new Glosse inset and some further minor changes.

9 years agoRewrite the linguistic Glosse insets.
Juergen Spitzmueller [Tue, 21 Apr 2015 18:33:35 +0000 (20:33 +0200)]
Rewrite the linguistic Glosse insets.

This gets rid of the PassThru hack and makes the inset actually usable
for linguistists.

Fixes: #7773
File format change.

9 years agoMake ParBreakIsNewline work in inset layout without PassThru
Juergen Spitzmueller [Tue, 21 Apr 2015 17:43:41 +0000 (19:43 +0200)]
Make ParBreakIsNewline work in inset layout without PassThru

Fixes: #9513
9 years agoFix version number
Juergen Spitzmueller [Tue, 21 Apr 2015 13:48:32 +0000 (15:48 +0200)]
Fix version number

9 years agoFix wrong symbol in IPA toolbar.
Juergen Spitzmueller [Tue, 21 Apr 2015 09:04:28 +0000 (11:04 +0200)]
Fix wrong symbol in IPA toolbar.

Richard, this shuld also go to branch.

9 years agolinguistics.lyx: small tweak.
Juergen Spitzmueller [Tue, 21 Apr 2015 08:23:33 +0000 (10:23 +0200)]
linguistics.lyx: small tweak.

9 years agoUpdate previews after pasting (#6211)
Scott Kostyshak [Sun, 19 Apr 2015 17:46:04 +0000 (13:46 -0400)]
Update previews after pasting (#6211)

The reason we want to do this is for if there is pasting across buffers.
For within buffer, the previews should already be updated. Calling the
buffer-wide updatePreviews() might seem like overkill, but actually it
should be quick because only the previews that need updating are updated
(and this check feels quick to me, although I did not profile).

If we were to loop through the pasted text and update each preview
individually, this might take more time. When updating previews
together, only one .tex file is compiled.

9 years agoUpdate previews on preference change (#9507)
Scott Kostyshak [Sun, 19 Apr 2015 06:30:28 +0000 (02:30 -0400)]
Update previews on preference change (#9507)

Normally the theBufferList().updatePreviews(); statement would go inside
of PrefDisplay::applyRC. However, that would not work well because
Buffer::updatePreviews() calls loader() which conditions on
(lyxrc.preview == LyXRC::PREVIEW_OFF) but the new RC has not been set at
this point.

9 years agoPreview and math now update on screen-up (#6173)
Scott Kostyshak [Sun, 19 Apr 2015 00:31:18 +0000 (20:31 -0400)]
Preview and math now update on screen-up (#6173)

When editing a preview inset, or math, when we leave the inset, we
should update the preview. This update now happens for screen-up and
screen-down (commonly bound to Page Up and Page Down).

Note that this is only relevant if preview is turned on in
preferences.

This commit probably fixes other issues for any inset that defines
notifyCursorLeaves().

This fixes only part of #6173.

9 years agofr.po: update from Jean-Pierre
Uwe Stöhr [Mon, 20 Apr 2015 22:34:19 +0000 (00:34 +0200)]
fr.po: update from Jean-Pierre

9 years agoDocument forest.
Juergen Spitzmueller [Mon, 20 Apr 2015 16:30:50 +0000 (18:30 +0200)]
Document forest.

9 years agoAdd support for linguistic trees (via forest)
Juergen Spitzmueller [Mon, 20 Apr 2015 16:14:42 +0000 (18:14 +0200)]
Add support for linguistic trees (via forest)

9 years agoNew (Inset)Layout tag PassThruChars
Juergen Spitzmueller [Mon, 20 Apr 2015 16:13:49 +0000 (18:13 +0200)]
New (Inset)Layout tag PassThruChars

9 years agoDo not show obsoleted flex insets in the menu.
Juergen Spitzmueller [Mon, 20 Apr 2015 16:10:25 +0000 (18:10 +0200)]
Do not show obsoleted flex insets in the menu.

9 years agode/linguistics.lyx: small tweak.
Juergen Spitzmueller [Mon, 20 Apr 2015 10:21:29 +0000 (12:21 +0200)]
de/linguistics.lyx: small tweak.

9 years agode.po
Juergen Spitzmueller [Mon, 20 Apr 2015 10:20:52 +0000 (12:20 +0200)]
de.po

9 years agoSupport item argument in linguistic examples
Juergen Spitzmueller [Mon, 20 Apr 2015 10:15:20 +0000 (12:15 +0200)]
Support item argument in linguistic examples

File format change.

9 years agoUpdate previews after doing a find/replace (#7242)
Scott Kostyshak [Sun, 19 Apr 2015 01:40:43 +0000 (21:40 -0400)]
Update previews after doing a find/replace (#7242)

This commit addresses #7242 for normal Find/Replace. That issue was
fixed for Advanced Find at 29948eec.

9 years agoRemove bad hack.
Jean-Marc Lasgouttes [Fri, 17 Apr 2015 13:58:14 +0000 (15:58 +0200)]
Remove bad hack.

The macro N_() is a no-op which does exactly what is needed here: tell gettext that the string should be in the list of translations.

9 years agoctests: remove some tests from ignored file
Scott Kostyshak [Fri, 17 Apr 2015 02:54:33 +0000 (22:54 -0400)]
ctests: remove some tests from ignored file

The bug that caused these tests to enter into infinite loops
(and have a memory leak) has been fixed. These tests now
pass on an updated TeX Live 2014 as well as the current TeX
Live 2015 pretest.

9 years agoAdd \li Origin for the buffer-move-* LFUNs
Scott Kostyshak [Fri, 17 Apr 2015 02:50:48 +0000 (22:50 -0400)]
Add \li Origin for the buffer-move-* LFUNs

9 years agoFrench UserGuide.lyx: updates from Jean-Pierre
Uwe Stöhr [Fri, 17 Apr 2015 00:19:29 +0000 (02:19 +0200)]
French UserGuide.lyx: updates from Jean-Pierre

9 years agocua.bind: switch shortcuts for bold and boldsymbol
Uwe Stöhr [Thu, 16 Apr 2015 23:18:56 +0000 (01:18 +0200)]
cua.bind: switch shortcuts for bold and boldsymbol

fixes bug #9413

9 years agoUserGuide.lyx: fix a typo
Uwe Stöhr [Thu, 16 Apr 2015 23:11:36 +0000 (01:11 +0200)]
UserGuide.lyx: fix a typo

9 years agoUserGuide.lyx: fix a LaTeX warning
Uwe Stöhr [Thu, 16 Apr 2015 23:03:18 +0000 (01:03 +0200)]
UserGuide.lyx: fix a LaTeX warning

\bf is deprecated

9 years agoToggle properly the math-display icon
Jean-Marc Lasgouttes [Thu, 16 Apr 2015 16:51:29 +0000 (18:51 +0200)]
Toggle properly the math-display icon

9 years agoDo not remove separators at end of rows.
Jean-Marc [Thu, 16 Apr 2015 09:39:33 +0000 (11:39 +0200)]
Do not remove separators at end of rows.

I am not sure why I addd this code at the time. I do not think there was a good reason.

Fixes bug #9447.

9 years agoAvoid requiring messages with empty language.
Jean-Marc Lasgouttes [Wed, 15 Apr 2015 13:27:05 +0000 (15:27 +0200)]
Avoid requiring messages with empty language.

This is a follow-up to commit 8aa2d6b1.

9 years agoemacs.bind: Added shortcuts for dictionaries
Kornel Benko [Tue, 14 Apr 2015 08:51:39 +0000 (10:51 +0200)]
emacs.bind: Added shortcuts for dictionaries

9 years agoUpdate it.po
Enrico Forestieri [Mon, 13 Apr 2015 14:16:03 +0000 (16:16 +0200)]
Update it.po

9 years agoUpdate sk.po
Kornel Benko [Mon, 13 Apr 2015 08:40:34 +0000 (10:40 +0200)]
Update sk.po

9 years agode.po
Juergen Spitzmueller [Mon, 13 Apr 2015 07:57:19 +0000 (09:57 +0200)]
de.po

9 years agoIssue a warning if thesaurus dir is not set up (as suggested in #9496)
Juergen Spitzmueller [Sun, 12 Apr 2015 13:55:01 +0000 (15:55 +0200)]
Issue a warning if thesaurus dir is not set up (as suggested in #9496)

9 years agoTweak some icons.
Enrico Forestieri [Sun, 12 Apr 2015 10:58:24 +0000 (12:58 +0200)]
Tweak some icons.

9 years agoUpdate tex2lyx test references
Georg Baum [Sun, 12 Apr 2015 08:07:42 +0000 (10:07 +0200)]
Update tex2lyx test references

The lyx2lyx conversions for the new formats are empty, therefore we can simply
update the format number.

9 years agoFix output of \lightning in math mode.
Enrico Forestieri [Sat, 11 Apr 2015 22:47:18 +0000 (00:47 +0200)]
Fix output of \lightning in math mode.

The \lightning symbol is text mode only. Hence, for using it in
mathed, it must be inserted in a text mode environment such as
\mbox, \text, etc. However, as it is not marked as textmode,
LyX "helpfully" encloses it in \ensuremath everytime one tries
to put it in a text mode environment, thus defying the countermeasure.
By declaring it textmode only, LyX stops doing that and thus it can be
correctly output by simply selecting it and hitting Ctrl-M.

9 years agoMath Panels: add "Fonts" icons.
Enrico Forestieri [Sat, 11 Apr 2015 21:02:25 +0000 (23:02 +0200)]
Math Panels: add "Fonts" icons.

9 years agoMath Panels: revise the "Math spacings" svg icons.
Enrico Forestieri [Sat, 11 Apr 2015 17:46:42 +0000 (19:46 +0200)]
Math Panels: revise the "Math spacings" svg icons.

9 years agoMath Panels: revise the "Miscellaneous (extended)" svg icons.
Enrico Forestieri [Sat, 11 Apr 2015 14:51:18 +0000 (16:51 +0200)]
Math Panels: revise the "Miscellaneous (extended)" svg icons.

9 years agoRemove problematic accelerator (#9495)
Juergen Spitzmueller [Fri, 10 Apr 2015 08:13:12 +0000 (10:13 +0200)]
Remove problematic accelerator (#9495)

Seems there is no free accelerator left for the source view pane.

9 years agoAdapt creation of preview images to the defaul document output.
Kornel Benko [Thu, 9 Apr 2015 14:29:59 +0000 (16:29 +0200)]
Adapt creation of preview images to the defaul document output.

Sometimes, even compilable documents could not display preview
snippets. Previously the preview was computed only with help
of latex or xelatex.
This also fixes #9371