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Editing File: /usr/share/X11/xkb/symbols/nbsp

// Let Space key provide No-Break Space (NBSP), Narrow No-Break Space (NNBSP),
// Zero-Width Non-Joiner (ZWNJ), and Zero-Width Joiner (ZWJ) for the desired
// levels.

////////////////////////////////////////
// Only Space

partial
xkb_symbols "none" {
  key <SPCE> {
    type[Group1]="ONE_LEVEL",
    symbols[Group1]= [ space ]
  };
};

////////////////////////////////////////
// No-Break Space

partial
xkb_symbols "level2" {
  key <SPCE> {
    type[Group1]="TWO_LEVEL",
    symbols[Group1]= [ space, nobreakspace ]
  };
};

// level3 & level3ns provide no-breaking spaces starting from level3
// This is good for typographers but experience shows many users accidently
// type no-breaking spaces on the CLI (resulting in errors)
// Used by fr(latin9) and lt(std)
partial
xkb_symbols "level3" {
  key <SPCE> {
    type[Group1]="FOUR_LEVEL",
    symbols[Group1]= [ space, space, nobreakspace ]
  };
};

// level3s kills fourth level
// Used by ca(multix)
partial
xkb_symbols "level3s" {
  key <SPCE> {
    type[Group1]="FOUR_LEVEL",
    symbols[Group1]= [ space, space, nobreakspace, NoSymbol ]
  };
};

// for this reason pushing no-breaking spaces to level4 is the safe default nowadays
partial
xkb_symbols "level4" {
  key <SPCE> {
    type[Group1]="FOUR_LEVEL",
    symbols[Group1]= [ space, space, space, nobreakspace ]
  };
};

////////////////////////////////////////
// Narrow No-Break Space

// level3n provides narrow no-breaking space in addition to the normal one
partial
xkb_symbols "level3n" {
  key <SPCE> {
    type[Group1]="FOUR_LEVEL",
    symbols[Group1]= [ space, space, nobreakspace, 0x100202F ]
  };
};

// level4n provides narrow no-breaking space in addition to the normal one
partial
xkb_symbols "level4n" {
 key <SPCE> {
   type[Group1]="EIGHT_LEVEL",
   symbols[Group1]= [ space, space, space, nobreakspace, space, 0x100202F, NoSymbol, NoSymbol ]
 };
};

// level4nl provides narrow no-breaking space in addition to the normal one
// without forcing the use of level5 for mostly four-level layouts
// Used by fr(oss), be(oss)…
partial
xkb_symbols "level4nl" {
 key <SPCE> {
   type[Group1]="LOCAL_EIGHT_LEVEL",
   symbols[Group1]= [ space, space, space, nobreakspace, space, 0x100202F, NoSymbol, NoSymbol ]
 };
};

////////////////////////////////////////
// Zero-Width Non-Joiner & Zero-Width Joiner
// Author: Behnam Esfahbod <behnam@esfahbod.info>

// ZWNJ and ZWJ are widely used in Persian, Kurdinsh, Pashto, Uzbek and other
// languages that use PersoArabic script.

// ZWNJ on level 2
partial
xkb_symbols "zwnj2" {
  key <SPCE> {
    type[Group1]="TWO_LEVEL",
    symbols[Group1]= [ space, 0x100200c ]
  };
};

// ZWNJ on level 2
// ZWJ on level 3
partial
xkb_symbols "zwnj2zwj3" {
  key <SPCE> {
    type[Group1]="FOUR_LEVEL",
    symbols[Group1]= [ space, 0x100200c, 0x100200d ]
  };
};

// ZWNJ on level 2
// ZWJ on level 3
// NBSP on level 4
partial
xkb_symbols "zwnj2zwj3nb4" {
  key <SPCE> {
    type[Group1]="FOUR_LEVEL",
    symbols[Group1]= [ space, 0x100200c, 0x100200d, nobreakspace ]
  };
};

// ZWNJ on level 2
// NBSP on level 3
// Used by ir(ku_ara), af(basic), af(ps), af(uz), af(olpc-fa), af(olpc-ps), af(olpc-uz)
partial
xkb_symbols "zwnj2nb3" {
  key <SPCE> {
    type[Group1]="FOUR_LEVEL",
    symbols[Group1]= [ space, 0x100200c, nobreakspace ]
  };
};

// ZWNJ on level 2
// NBSP on level 3
partial
xkb_symbols "zwnj2nb3s" {
  key <SPCE> {
    type[Group1]="FOUR_LEVEL",
    symbols[Group1]= [ space, 0x100200c, nobreakspace, NoSymbol ]
  };
};

// ZWNJ on level 2
// NBSP on level 3
// ZWJ on level 4
partial
xkb_symbols "zwnj2nb3zwj4" {
  key <SPCE> {
    type[Group1]="FOUR_LEVEL",
    symbols[Group1]= [ space, 0x100200c, nobreakspace, 0x100200d ]
  };
};

// ZWNJ on level 2
// NBSP on level 3
// NNBSP on level 4
// Used by ir(pes)
partial
xkb_symbols "zwnj2nb3nnb4" {
  key <SPCE> {
    type[Group1]="FOUR_LEVEL",
    symbols[Group1]= [ space, 0x100200c, nobreakspace, 0x100202F ]
  };
};

// ZWNJ on level 3
// ZWJ on level 4
// Used by in(deva), in(olpc)
partial
xkb_symbols "zwnj3zwj4" {
  key <SPCE> {
    type[Group1]="FOUR_LEVEL",
    symbols[Group1]= [ space, space, 0x100200c, 0x100200d ]
  };
};

// NBSP on level 2
// ZWNJ on level 3
// Used by lk(sin_phonetic)
partial
xkb_symbols "nb2zwnj3s" {
  key <SPCE> {
    type[Group1]="FOUR_LEVEL",
    symbols[Group1]= [ space, nobreakspace, 0x100200c, NoSymbol ]
  };
};

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