Added comments to the gettext dictionaries generated by the xgettext tool.

The prefix to be searched for in the source code comments is TRN

CMakeLists.txt

@@ -321,7 +321,7 @@ include_directories(${GLEW_INCLUDE_DIRS})
 # l10n
 set(L10N_DIR "${SLIC3R_RESOURCES_DIR}/localization")
 add_custom_target(pot
-    COMMAND xgettext --keyword=L --from-code=UTF-8 --debug
+    COMMAND xgettext --keyword=L --add-comments=TRN --from-code=UTF-8 --debug
         -f "${L10N_DIR}/list.txt"
         -o "${L10N_DIR}/Slic3rPE.pot"
     WORKING_DIRECTORY ${PROJECT_SOURCE_DIR}

doc/Localization_guide.md

@@ -46,7 +46,7 @@ https://github.com/prusa3d/Slic3r/tree/master/resources/localization/list.txt.
 
 2.  Create template file(*.POT) with GNUgettext command:
     ```
-        xgettext --keyword=L --from-code=UTF-8 --debug -o Slic3rPE.pot -f list.txt
+        xgettext --keyword=L --add-comments=TRN --from-code=UTF-8 --debug -o Slic3rPE.pot -f list.txt
     ```
 
     Use flag `--from-code=UTF-8` to specify that the source strings are in UTF-8 encoding

src/libslic3r/SLAPrint.cpp

@@ -697,6 +697,7 @@ void SLAPrint::process()
                 po.closest_slice_record(po.m_slice_index, float(bb3d.min(Z)));
 
         if(slindex_it == po.m_slice_index.end())
+			//TRN To be shown at the status bar on SLA slicing error.
             throw std::runtime_error(L("Slicing had to be stopped "
                                        "due to an internal error."));