This file is indexed.

/usr/share/X11/xkb/symbols/eurosign is in xkb-data 2.5-1ubuntu1.

This file is owned by root:root, with mode 0o644.

The actual contents of the file can be viewed below.

 1
 2
 3
 4
 5
 6
 7
 8
 9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
// Most keyboards have the EuroSign engraved on the E key
partial
xkb_symbols "e" {
    key <AD03>	{ [  NoSymbol,   NoSymbol,   EuroSign,	NoSymbol ]	};
};

// Many Apple keyboards have the EuroSign engraved on the 2 key
partial
xkb_symbols "2" {
    key <AE02>	{ [  NoSymbol,   NoSymbol,   EuroSign,	NoSymbol ]	};
};

// Some keyboards have the EuroSign engraved on the 4 key
partial
xkb_symbols "4" {
    key <AE04>	{ [  NoSymbol,   NoSymbol,   EuroSign,	NoSymbol ]	};
};

// Many keyboards have the EuroSign engraved on the 5 key
partial
xkb_symbols "5" {
    key <AE05>	{ [  NoSymbol,   NoSymbol,   EuroSign,	NoSymbol ]	};
};