Wayland: Check whether locales are the empty string and ignore them if they are #2729
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This fixes a confusing error in compiling the xkb compose table if LC_ALL, LC_CTYPE, or LANG are set to the empty string.
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This fixes a confusing error in compiling the xkb compose table if LC_ALL, LC_CTYPE, or LANG are set to the empty string:
By checking for the empty string, the locales are instead ignored and GLFW initialises properly. Other applications don't seem to have an issue with empty locale strings, so I think following their behaviour is the way to go.