Re: How to temporarily change Cursor color and change back

Christian Brabandt:
>On Do, 04 Mär 2010, pansz wrote:
>> Script can use highlight command to change color, however, if a
>> script meant to change one color temporarily, it has no knowledge
>> about the previous setting.
>>
>> 1. the :hi Cursor is defined by my color scheme. 2. now in some
>> case a script change the cursor color to indicate a special mode.
>> 3. when the mode ends, the script want to change the Cursor back
>> but it has no knowledge about what is the highlight of Cursor
>> defined by user's color scheme.
> […]
>> Any work around? Thanks for all.
>>
>
> Try the attached script. I was written quick and dirty fr a similar
> issue on this list. It already queries the font attribute, though
> this only works with a patched vim, currently.

Christian Brabandt kindly donated a function "Hi" to save the
highlighting for a group (included at the very bottom).

:hi CursorLine
CursorLine xxx term=underline cterm=underline guifg=white guibg=#002000

I have groups for which not all keys are defined. They are saved with
a value of -1, which seems to be interpretted as an error:

:echo Hi("CursorLine")
hi CursorLine term=underline ctermbg=-1 ctermfg=-1 guibg=#002000 cterm=underline guifg=white

:exe Hi("CursorLine")
E421: Color name or number not recognized: ctermbg=-1 ctermfg=-1 guibg=#002000 cterm=underline guifg=white

I've delved into vim code in years past, and I have an idea of how
long it will take. Unfortunately, I won't be doing that any time
soon. Is there a quick way to get around the problem? My vim version
info is:

VIM - Vi IMproved 7.4 (2013 Aug 10, compiled Feb 19 2014 10:14:40)
Included patches: 1-182
Compiled by <cygwin-xfree_AT_cygwin.com>
Huge version with GTK2 GUI. Features included (+) or not (-):
+acl +dialog_con_gui +insert_expand +mouse_sgr +ruby/dyn +vertsplit
+arabic +diff +jumplist -mouse_sysmouse +scrollbind +virtualedit
+autocmd +digraphs +keymap +mouse_urxvt +signs +visual
+balloon_eval +dnd +langmap +mouse_xterm +smartindent +visualextra
+browse -ebcdic +libcall +multi_byte -sniff +viminfo
++builtin_terms +emacs_tags +linebreak +multi_lang +startuptime +vreplace
+byte_offset +eval +lispindent -mzscheme +statusline +wildignore
+cindent +ex_extra +listcmds +netbeans_intg -sun_workshop +wildmenu
+clientserver +extra_search +localmap +path_extra +syntax +windows
+clipboard +farsi +lua/dyn +perl/dyn +tag_binary +writebackup
+cmdline_compl +file_in_path +menu +persistent_undo +tag_old_static +X11
+cmdline_hist +find_in_path +mksession +postscript -tag_any_white -xfontset
+cmdline_info +float +modify_fname +printer -tcl +xim
+comments +folding +mouse +profile +terminfo +xsmp_interact
+conceal -footer +mouseshape +python/dyn +termresponse +xterm_clipboard
+cryptv +fork() +mouse_dec +python3/dyn +textobjects -xterm_save
+cscope +gettext -mouse_gpm +quickfix +title +xpm
+cursorbind -hangul_input -mouse_jsbterm +reltime +toolbar
+cursorshape +iconv +mouse_netterm +rightleft +user_commands
system vimrc file: "$VIM/vimrc"
user vimrc file: "$HOME/.vimrc"
2nd user vimrc file: "~/.vim/vimrc"
user exrc file: "$HOME/.exrc"
system gvimrc file: "$VIM/gvimrc"
user gvimrc file: "$HOME/.gvimrc"
2nd user gvimrc file: "~/.vim/gvimrc"
system menu file: "$VIMRUNTIME/menu.vim"
fall-back for $VIM: "/etc"
f-b for $VIMRUNTIME: "/usr/share/vim/vim74"
Compilation: gcc -c -I. -Iproto -DHAVE_CONFIG_H -DFEAT_GUI_GTK -D_REENTRANT -I/usr/include/gtk-2.0 -I/usr/lib/gtk-2.0/include -I/usr/include/atk-1.0 -I/usr/include/cairo -I/usr/include/gdk-pixbuf-2.0 -I/usr/include/pango-1.0 -I/usr/include/gio-unix-2.0/ -I/usr/include/glib-2.0 -I/usr/lib/glib-2.0/include -I/usr/include/pixman-1 -I/usr/include/freetype2 -I/usr/include/libpng15 -I/usr/include/harfbuzz -I/usr/include/ncursesw -ggdb -O2 -pipe -Wimplicit-function-declaration -fdebug-prefix-map=/usr/src/ports/vim/vim-7.4.182-1.x86_64/build=/usr/src/debug/vim-7.4.182-1 -fdebug-prefix-map=/usr/src/ports/vim/vim-7.4.182-1.x86_64/src/vim74=/usr/src/debug/vim-7.4.182-1 -U_FORTIFY_SOURCE -D_FORTIFY_SOURCE=1
Linking: gcc -L. -L/usr/local/lib -Wl,--as-needed -o vim.exe -lgtk-x11-2.0 -lgdk-x11-2.0 -latk-1.0 -lpangocairo-1.0 -lXinerama -lXi -lXrandr -lXcursor -lXcomposite -lXdamage -lgdk_pixbuf-2.0 -lpangoft2-1.0 -lgio-2.0 -lXfixes -lcairo -lpixman-1 -lxcb-shm -lxcb-render -lXrender -lXext -lX11 -lxcb -lXau -lXdmcp -lpng15 -lharfbuzz -lpango-1.0 -lm -lfontconfig -lexpat -lfreetype -lz -lbz2 -lgmodule-2.0 -lgobject-2.0 -lffi -lglib-2.0 -lintl -liconv -lpcre -lSM -lICE -lXpm -lXt -lX11 -lXdmcp -lSM -lICE -lm -lelf -lncursesw -liconv -lintl -Wl,--enable-auto-import -Wl,--export-all-symbols -Wl,--enable-auto-image-base -fstack-protector -L/usr/lib/perl5/5.14/x86_64-cygwin-threads/CORE -lperl -ldl -lcrypt
--------------------------------------------------
fun! Hi(...)
let s:attr = {}
let s:attr1 = {'bold' : 0, 'italic': 0, 'reverse': 0, 'inverse': 0, 'underline': 0, 'undercurl': 0 , 'standout':0}
let s:query = ['fg', 'bg', 'sp', 'bold', 'italic', 'reverse', 'underline', 'undercurl', 'standout', 'font']

for key in s:query
for mode in ['term', 'cterm', 'gui']
if !empty(synIDattr(synIDtrans(hlID(a:1)), key, mode))
if key =~ 'fg\|bg' || (key=='sp' && mode=='gui')
let s:attr[mode . key]=synIDattr(synIDtrans(hlID(a:1)), key, mode)
elseif key=='font' && mode=='gui'
let s:attr[key]=synIDattr(synIDtrans(hlID(a:1)), key, mode)
else
let s:attr1[mode . key] = synIDattr(synIDtrans(hlID(a:1)), key, mode)
endif
endif
endfor
endfor

if has("gui_running")
let cmode='gui'
else
let cmode='cterm'
endif

for mode in ['term', 'cterm', 'gui']
if get(s:attr1, mode . 'italic') ||
\ get(s:attr1, mode . 'bold') ||
\ get(s:attr1, mode . 'reverse') ||
\ get(s:attr1, mode . 'underline') ||
\ get(s:attr1, mode . 'standout') ||
\ get(s:attr1, mode . 'undercurl')

let s:attr[mode] = get(s:attr1, mode . 'italic', '') ? 'italic,' : ''
let s:attr[mode] .= get(s:attr1, mode . 'bold', '') ? 'bold,' : ''
let s:attr[mode] .= get(s:attr1, mode . 'reverse', '') ? 'reverse,' : ''
let s:attr[mode] .= get(s:attr1, mode . 'underline', '') ? 'underline,' : ''
let s:attr[mode] .= get(s:attr1, mode . 'standout', '') ? 'standout,' : ''
let s:attr[mode] .= get(s:attr1, mode . 'undercurl', '') ? 'undercurl' : ''
endif
endfor

let out='hi ' . a:1
for item in items(s:attr)
"if item[1] >=0
let out .= printf(" %s=%s", item[0], item[1])
"endif
endfor
let out=substitute(out, ',\(\s\|$\)', ' ' , 'g')
if len(split(out, '\s\+')) == 2
let out=substitute(out, '^hi', '& clear', '')
endif
" echo out

return out
endfun

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