Inconsistent word command behavior

[doublep]

After installing the extension, with the following code (| indicates the cursor) I get this behavior:

|int x;
int y;

M-f

int| x;
int y;

M-f

int x|;
int y;

M-f

int x;|
int y;

This is inconsistent with Emacs that doesn't treat ';' as a word.

But also:

|int x;
int y;

M-d

| x;
int y;

M-d

|;
int y;

M-d

| y;

I.e. M-d doesn't stop after deleting ';' and continues to eat 'int' on the next line too. This is consistent with how Emacs behaves, but not consistent with the extension's M-f.

But if we write things into one line (int x; int y;) behavior of M-d changes:

|int x; int y; [M-d] -> | x; int y; -> |; int y; -> | int y;

i.e. here it works like M-f from the extension and not how Emacs...