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Note: namesp. add : added namespace before processing              The Okular Handbook
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CMake Error at /home/nico/kde/usr/lib64/cmake/KF5I18n/kf5i18nuic.cmake:39 (STRING):
  STRING sub-command REGEX, mode REPLACE: Unknown escape "\(" in
  replace-expression.


make[2]: *** [CMakeFiles/okularcore.dir/build.make:68: ui_textdocumentsettings.h] Error 1
make[1]: *** [CMakeFiles/Makefile2:136: CMakeFiles/okularcore.dir/all] Error 2
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make: *** [Makefile:141: all] Error 2