Why I can use relative path and absolute path on may MacVim? - macos

Question

I just started to learning C Language.
My system is OS X 10.10 and MacVim 7.4.383 compiled by myself because I need it support python3.
But I find if a just double cilck the MacVim.app and :open ~/Desktop/something.c, it will tell me that something.c is a new file. But I did have a file called something.c on my Desktop, and I search the reason of situation, it seem to there is something about environment variable, so I follow the guide to add this code to file:///etc/launchd.conf
setenv PATH /usr/bin:/bin:/usr/sbin:/sbin:/usr/local/bin
and restart my computer, it didn't change anything
and my /etc/bashrc is
System-wide .bashrc file for interactive bash(1) shells.
if [ -z "$PS1" ]; then
return
fi
PS1='\d \A \u # \H \w #\#: \$ '
# Make bash check its window size after a process completes
shopt -s checkwinsize
# Tell the terminal about the working directory at each prompt.
if [ "$TERM_PROGRAM" == "Apple_Terminal" ] && [ -z "$INSIDE_EMACS" ]; then
update_terminal_cwd() {
# Identify the directory using a "file:" scheme URL,
# including the host name to disambiguate local vs.
# remote connections. Percent-escape spaces.
local SEARCH=' '
local REPLACE='%20'
local PWD_URL="file://$HOSTNAME${PWD//$SEARCH/$REPLACE}"
printf '\e]7;%s\a' "$PWD_URL"
}
PROMPT_COMMAND="update_terminal_cwd; $PROMPT_COMMAND"
fi
# ===== ===== ===== =====
# Custom Setting
export CLICOLOR=1
export LSCOLORS=gxfxaxdxcxegedabagacad
export HISTSIZE=250
# Setting PATH for KDE
export KDEDIRS=$KDEDIRS:$HOME/Library/Preferences/KDE:/usr/local/kde4
export PATH=/usr/local/kde4/bin:$PATH
export DYLD_LIBRARY_PATH=/usr/local/kde4/lib:$DYLD_LIBRARY_PATH
launchctl setenv DYLD_LIBRARY_PATH /usr/local/kde4/lib:$DYLD_LIBRARY_PATH
export XDG_DATA_HOME=$HOME/Library/Preferences/KDE/share
export XDG_DATA_DIRS=/usr/local/kde4/share:/usr/local/share:/usr/share
# Setting PATH for MySQL
export PATH=$PATH:/usr/local/mysql/bin/
# Setting PATH for Node.js and NPM
export PATH=$PATH:/usr/local/bin/node
export PATH=$PATH:/usr/local/bin/npm
# Setting PATH for Python 3.4
# The orginal version is saved in .bash_profile.pysave
PATH="/Library/Frameworks/Python.framework/Versions/3.4/bin:${PATH}"
export PATH
# Setting PATH for Python 2.7
# The orginal version is saved in .bash_profile.pysave
PATH="/Library/Frameworks/Python.framework/Versions/2.7/bin:${PATH}"
export PATH
And if I used absolute path like this
:open /Users/XXX/Desktop/something.c
it will print an error
E479:Not match
E32:No file name
So, what can I do to make the MacVim work like just under linux, thank you.

Answer 1

:open is not used for opening a file. You need to use :edit or :e command for that.
You can just use:
:e /Users/XXX/Desktop/something.c
Also $PATH doesn't have any impact on :e command.
As per vim help:
1: Simulated command simulated-command
This command is in Vi, but Vim only simulates it:
*:o* *:op* *:open* :[range]o[pen] Works like |:visual|: end Ex mode.
{Vi: start editing in open mode}
:[range]o[pen] /pattern/ As above, additionally move the cursor to the
column where "pattern" matches in the cursor
line.
Vim does not support open mode, since it's not really useful. For
those situations where ":open" would start open mode Vim will leave Ex
mode, which allows executing the same commands, but updates the whole
screen instead of only one line.