Commit d1be73c ("keyboard.c Use viewports, move text box pos")
moved the picker and edit line into dedicated viewports. Under an
RTL UI language these viewports get VP_FLAG_ALIGN_RIGHT, so
lcd_putsxy mirrors every call; with the per-character cell drawing
this reversed the picker grid and the edit line (Hebrew shown
reversed, Latin filenames backwards, wrong caret).
- Clear the alignment flag on the keyboard own viewports so the
picker grid and cell layout are no longer mirrored.
- Draw the edit line as a single string so the bidi engine reorders
mixed Hebrew/Latin correctly, and use the full line width.
- Compute the caret from the bidi (LTR-base) visual layout so it
lands at the insertion point, including mixed Hebrew+Latin text.
- Pick the edit-line direction and invert the left/right cursor
keys based on the text first strong character.
Change-Id: I79f1c444bc9121fd5018ad5f6f4148afe2c1a3e1
0e3355de50