[LyX/master] Amend 75f7eafd

[Enrico Forestieri]

commit d44b0a19cb6e16e7cbbe324b1c351d01980815f5
Author: Enrico Forestieri <for...@lyx.org>
Date:   Wed Apr 29 13:59:28 2015 +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.

diff --git a/lib/scripts/legacy_lyxpreview2ppm.py 
b/lib/scripts/legacy_lyxpreview2ppm.py
index 597883a..86a8735 100644
--- a/lib/scripts/legacy_lyxpreview2ppm.py
+++ b/lib/scripts/legacy_lyxpreview2ppm.py
@@ -302,7 +302,7 @@ def legacy_conversion_step1(latex_file, dpi, output_format, 
fg_color, bg_color,
     # Compile the latex file.
     latex_status, latex_stdout = run_latex(latex, latex_file)
     if latex_status:
-      return (latex_status, [])
+        warning("trying to recover from failed compilation")
 
     if pdf_output:
         return legacy_conversion_step3(latex_file, dpi, output_format, True, 
skipMetrics)
diff --git a/lib/scripts/lyxpreview2bitmap.py b/lib/scripts/lyxpreview2bitmap.py
index de4121f..dfed264 100755
--- a/lib/scripts/lyxpreview2bitmap.py
+++ b/lib/scripts/lyxpreview2bitmap.py
@@ -435,7 +435,9 @@ def main(argv):
                 fg_color, bg_color, latex, pdf_output)
 
     # Compile the latex file.
-    run_latex(latex, latex_file, bibtex)
+    latex_status, latex_stdout = run_latex(latex, latex_file, bibtex)
+    if latex_status:
+        warning("trying to recover from failed compilation")
 
     # The dvi output file name
     dvi_file = latex_file_re.sub(".dvi", latex_file)