exists() result is sometimes misleading for a command.
Example (with GTK3 gvim linked with GTK 3.16.7):
:echo exists(':tearoff')
2
:tearoff &Help
E319: Sorry, the command is not available in this version
So for example the following code in my vimrc would produce the exact
error which it is meant to avoid:
au GUIEnter * if exists(':tearoff') == 2 | exe 'tearoff &Help' | endif
If the :tearoff command is disabled in GTK3 gvim, then IMHO
exists(':tearoff') ought to return 0, not 2.
Best regards,
Tony.
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