[Github-comments] [geany/geany] Right to left text and security (Issue #2981)

[Alessandro Vesely]

What about a popup warning about unsupported characters in the file to be opened, and offering to either remove them or abort editing?

AFAIK its just four code points:

    RLO (U+202E): treat the following text as right-to-left
    LRI (U+2066): treat the following text as left-to-right, without affecting the surrounding text
    RLI (U+2067): treat the following text as right-to-left, without affecting the surrounding text
    PDI (U+2069): terminate the most recent LRI or RLI 

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