signature_block.vim: remove trailing spaces on empty lines

[vim/signature_block.vim.git] / plugin / signature_block.vim

diff --git a/plugin/signature_block.vim b/plugin/signature_block.vim
index cc6223c..8d19134 100644 (file)
--- a/plugin/signature_block.vim
+++ b/plugin/signature_block.vim
@@ -15,10 +15,10 @@
 " map <Leader>R :call ReplaceAllSignatures('~/.signature')<CR>
 "
 " " Append a signature block to all e-mails
-" autocmd FileType mail silent call AddSignature('~/.signature') | w
+" autocmd FileType mail if AddSignature('~/.signature') | w | endif
 "
-" " Append a signature block to cover letters generated with git-format-patch
-" autocmd BufRead 0000-cover-letter.patch silent call AddSignature('~/.signature') | w
+" " Replace the git version with a signature in cover letters generated with git-format-patch
+" autocmd BufRead 0000-cover-letter.patch if ReplaceLastSignature('~/.signature') | w | endif
 " autocmd BufRead 0000-cover-letter.patch autocmd! BufRead 0000-cover-letter.patch
 "
 " References:
@@ -31,6 +31,19 @@ if exists("g:loaded_signaturePlugin") | finish | endif
 let g:loaded_signaturePlugin = 1
 
 
+" Function:     SigFileReadable()
+" Purpose:      Check if the signature file is readable
+"---------------------------------------------------------------------------
+func! SigFileReadable(sigfile)
+       let filename = expand(a:sigfile)
+       if !filereadable(filename)
+               echoerr "E484: Can't open file " . filename
+               return v:false
+       endif
+
+       return v:true
+endfunc
+
 "---------------------------------------------------------------------------
 " Function:     AppendSignature()
 " Purpose:      Append a signature block at the end of message
@@ -49,6 +62,10 @@ endfunc
 " Purpose:      Add a signature block if there isn't one already
 "---------------------------------------------------------------------------
 func! AddSignature(sigfile)
+       if !SigFileReadable(a:sigfile)
+               return v:false
+       endif
+
        " Save current cursor position in mark 'z'
        normal mz
 
@@ -63,6 +80,8 @@ func! AddSignature(sigfile)
 
        " restore cursor position from mark 'z' if the mark is still valid
        silent! normal `z
+
+       return v:true
 endfunc
 
 
@@ -71,6 +90,10 @@ endfunc
 " Purpose:      Replace all signature blocks in the message
 "---------------------------------------------------------------------------
 func! ReplaceAllSignatures(sigfile)
+       if !SigFileReadable(a:sigfile)
+               return v:false
+       endif
+
        " Save current cursor position in mark 'z'
        normal mz
 
@@ -82,9 +105,11 @@ func! ReplaceAllSignatures(sigfile)
        endtry
 
        call AppendSignature(a:sigfile)
-       
+
        " restore cursor position from mark 'z' if the mark is still valid
        silent! normal `z
+
+       return v:true
 endfunc
 
 
@@ -93,6 +118,10 @@ endfunc
 " Purpose:      Replace only the last signature block in the message
 "---------------------------------------------------------------------------
 func! ReplaceLastSignature(sigfile)
+       if !SigFileReadable(a:sigfile)
+               return v:false
+       endif
+
        " Save current cursor position in mark 'z'
        normal mz
 
@@ -104,7 +133,9 @@ func! ReplaceLastSignature(sigfile)
        endtry
 
        call AppendSignature(a:sigfile)
-       
+
        " restore cursor position from mark 'z' if the mark is still valid
        silent! normal `z
+
+       return v:true
 endfunc