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Using a special key in function

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0

I am trying to remap <PageUp> key to call this function:

function! PageUp()
 let l:line = line('.')
 if(l:line != 1)
 if(l:line != winline())
 :set syntax=off
 <PageUp>
 :set syntax=on
 else
 normal! 1G
 endif
 endif
endfunction

but gvim complains that I cannot do it.

So what is the proper way to use the keys in a function ?

vimscript

share|improve this question

asked Jun 3 at 22:22

simo-zzsimo-zz

20419

add a comment | 

0

I am trying to remap <PageUp> key to call this function:

function! PageUp()
 let l:line = line('.')
 if(l:line != 1)
 if(l:line != winline())
 :set syntax=off
 <PageUp>
 :set syntax=on
 else
 normal! 1G
 endif
 endif
endfunction

but gvim complains that I cannot do it.

So what is the proper way to use the keys in a function ?

vimscript

share|improve this question

asked Jun 3 at 22:22

simo-zzsimo-zz

20419

add a comment | 

I am trying to remap <PageUp> key to call this function:

function! PageUp()
 let l:line = line('.')
 if(l:line != 1)
 if(l:line != winline())
 :set syntax=off
 <PageUp>
 :set syntax=on
 else
 normal! 1G
 endif
 endif
endfunction

but gvim complains that I cannot do it.

So what is the proper way to use the keys in a function ?

vimscript

share|improve this question

asked Jun 3 at 22:22

simo-zzsimo-zz

20419

function! PageUp()
 let l:line = line('.')
 if(l:line != 1)
 if(l:line != winline())
 :set syntax=off
 <PageUp>
 :set syntax=on
 else
 normal! 1G
 endif
 endif
endfunction

share|improve this question

asked Jun 3 at 22:22

simo-zzsimo-zz

20419

share|improve this question

asked Jun 3 at 22:22

simo-zzsimo-zz

20419

asked Jun 3 at 22:22

simo-zzsimo-zz

20419

asked Jun 3 at 22:22

simo-zzsimo-zz

20419

2 Answers
2

active

oldest

votes

3

First of all, you use the PageUp key in Normal mode so the underlying functionality is a Normal mode command. You can't use such commands directly while in an Ex command-line or function/script. You need to use the Ex command :norm for this.

Further, to use "key codes" (:h key-codes) of non-printing characters like <PageUp> you need to construct the :norm command as an expression and pass it to the :exe command (see last paragraph of :h :norm).

That gives us:

:exe "norm <PageUp>"

The double quotes are required as is the to escape the keycode and indicate that you want the special meaning not the literal string "<PageUp>".

(Note: Usually we want to use norm! instead of norm in order to avoid conflicts with mappings but that's not a critical element of this answer so omitted.)

share|improve this answer

edited Jun 4 at 0:36

answered Jun 4 at 0:04

B LayerB Layer

6,3621621

add a comment | 

1

To send special key to :normal, you need to get it's raw code by using "<key>" notation.

exec "norm! <PageUp>"

You can also use raw code directly if you want(not recommended, hard to read):

norm! <80>kP
 ^----------<80> is 0x80

<80>kP is raw code of <PageUp>, you can enter it like this in normal mode:

"="<PageUp>"<cr>p
 ^----------press carriage return

If raw code of the key doesn't start with 0x80, it's the same as terminal code (not sure), you can use the :h i_CTRL-V to insert terminal code:

norm! <c-v><c-p>
 ^------------press ctrl-v ctrl-p

• :h :exec


• :h quote=


• :h string

share|improve this answer

edited Jun 4 at 3:49

answered Jun 4 at 0:17

dedowsdidedowsdi

1,559414

add a comment | 

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3

First of all, you use the PageUp key in Normal mode so the underlying functionality is a Normal mode command. You can't use such commands directly while in an Ex command-line or function/script. You need to use the Ex command :norm for this.

Further, to use "key codes" (:h key-codes) of non-printing characters like <PageUp> you need to construct the :norm command as an expression and pass it to the :exe command (see last paragraph of :h :norm).

That gives us:

:exe "norm <PageUp>"

The double quotes are required as is the to escape the keycode and indicate that you want the special meaning not the literal string "<PageUp>".

(Note: Usually we want to use norm! instead of norm in order to avoid conflicts with mappings but that's not a critical element of this answer so omitted.)

share|improve this answer

edited Jun 4 at 0:36

answered Jun 4 at 0:04

B LayerB Layer

6,3621621

add a comment | 

3

First of all, you use the PageUp key in Normal mode so the underlying functionality is a Normal mode command. You can't use such commands directly while in an Ex command-line or function/script. You need to use the Ex command :norm for this.

Further, to use "key codes" (:h key-codes) of non-printing characters like <PageUp> you need to construct the :norm command as an expression and pass it to the :exe command (see last paragraph of :h :norm).

That gives us:

:exe "norm <PageUp>"

The double quotes are required as is the to escape the keycode and indicate that you want the special meaning not the literal string "<PageUp>".

(Note: Usually we want to use norm! instead of norm in order to avoid conflicts with mappings but that's not a critical element of this answer so omitted.)

share|improve this answer

edited Jun 4 at 0:36

answered Jun 4 at 0:04

B LayerB Layer

6,3621621

add a comment | 

First of all, you use the PageUp key in Normal mode so the underlying functionality is a Normal mode command. You can't use such commands directly while in an Ex command-line or function/script. You need to use the Ex command :norm for this.

Further, to use "key codes" (:h key-codes) of non-printing characters like <PageUp> you need to construct the :norm command as an expression and pass it to the :exe command (see last paragraph of :h :norm).

That gives us:

:exe "norm <PageUp>"

The double quotes are required as is the to escape the keycode and indicate that you want the special meaning not the literal string "<PageUp>".

(Note: Usually we want to use norm! instead of norm in order to avoid conflicts with mappings but that's not a critical element of this answer so omitted.)

share|improve this answer

edited Jun 4 at 0:36

answered Jun 4 at 0:04

B LayerB Layer

6,3621621

:exe "norm <PageUp>"

share|improve this answer

edited Jun 4 at 0:36

answered Jun 4 at 0:04

B LayerB Layer

6,3621621

answered Jun 4 at 0:04

B LayerB Layer

6,3621621

answered Jun 4 at 0:04

B LayerB Layer

6,3621621

1

To send special key to :normal, you need to get it's raw code by using "<key>" notation.

exec "norm! <PageUp>"

You can also use raw code directly if you want(not recommended, hard to read):

norm! <80>kP
 ^----------<80> is 0x80

<80>kP is raw code of <PageUp>, you can enter it like this in normal mode:

"="<PageUp>"<cr>p
 ^----------press carriage return

If raw code of the key doesn't start with 0x80, it's the same as terminal code (not sure), you can use the :h i_CTRL-V to insert terminal code:

norm! <c-v><c-p>
 ^------------press ctrl-v ctrl-p

• :h :exec


• :h quote=


• :h string

share|improve this answer

edited Jun 4 at 3:49

answered Jun 4 at 0:17

dedowsdidedowsdi

1,559414

add a comment | 

1

To send special key to :normal, you need to get it's raw code by using "<key>" notation.

exec "norm! <PageUp>"

You can also use raw code directly if you want(not recommended, hard to read):

norm! <80>kP
 ^----------<80> is 0x80

<80>kP is raw code of <PageUp>, you can enter it like this in normal mode:

"="<PageUp>"<cr>p
 ^----------press carriage return

If raw code of the key doesn't start with 0x80, it's the same as terminal code (not sure), you can use the :h i_CTRL-V to insert terminal code:

norm! <c-v><c-p>
 ^------------press ctrl-v ctrl-p

• :h :exec


• :h quote=


• :h string

share|improve this answer

edited Jun 4 at 3:49

answered Jun 4 at 0:17

dedowsdidedowsdi

1,559414

add a comment | 

To send special key to :normal, you need to get it's raw code by using "<key>" notation.

exec "norm! <PageUp>"

You can also use raw code directly if you want(not recommended, hard to read):

norm! <80>kP
 ^----------<80> is 0x80

<80>kP is raw code of <PageUp>, you can enter it like this in normal mode:

"="<PageUp>"<cr>p
 ^----------press carriage return

If raw code of the key doesn't start with 0x80, it's the same as terminal code (not sure), you can use the :h i_CTRL-V to insert terminal code:

norm! <c-v><c-p>
 ^------------press ctrl-v ctrl-p

• :h :exec


• :h quote=


• :h string

share|improve this answer

edited Jun 4 at 3:49

answered Jun 4 at 0:17

dedowsdidedowsdi

1,559414

exec "norm! <PageUp>"

norm! <80>kP
 ^----------<80> is 0x80

"="<PageUp>"<cr>p
 ^----------press carriage return

norm! <c-v><c-p>
 ^------------press ctrl-v ctrl-p

share|improve this answer

edited Jun 4 at 3:49

answered Jun 4 at 0:17

dedowsdidedowsdi

1,559414

answered Jun 4 at 0:17

dedowsdidedowsdi

1,559414

answered Jun 4 at 0:17

dedowsdidedowsdi

1,559414