MidnightCommander macros

mc.md

Add several macros to format Golang code and comment/uncomment and indent/unindent code blocks.

# ~/.local/share/mc/mc.macros
[editor]
ctrl-alt-f = ExecuteScript:0
ctrl-c = ExecuteScript:1
ctrl-alt-c = ExecuteScript:2
ctrl-tab = ExecuteScript:3
ctrl-shift-tab = ExecuteScript:4

# ~/.local/share/mc/mcedit/macros.d/macro.0.sh
u       gofmt
        echo 'Formatting %f'
        go fmt "%f"

# ~/.local/share/mc/mcedit/macros.d/macro.1.sh
c       comment
        TMPFILE=$(mktemp ${MC_TMPDIR:-/tmp}/comment.XXXXXX) || exit 1
        EXT=$(echo %f | sed 's/.*\.//')
        cat %b > $TMPFILE
        if [[ $EXT == 'go' ]]; then
        cat $TMPFILE | sed 's,^,// ,' > %b
        else
        cat $TMPFILE | sed 's/^/# /' > %b
        fi
        rm -f $TMPFILE

# ~/.local/share/mc/mcedit/macros.d/macro.2.sh
u       uncomment
        TMPFILE=`mktemp ${MC_TMPDIR:-/tmp}/uncomment.XXXXXX` || exit 1
        EXT=$(echo %f | sed 's/.*\.//')
        cat %b > $TMPFILE
        if [[ $EXT == 'go' ]]; then
        cat $TMPFILE | sed 's,^// ,,' > %b
        else
        cat $TMPFILE | sed 's/^# //' > %b
        fi
        rm -f $TMPFILE

# ~/.local/share/mc/mcedit/macros.d/macro.3.sh
i       indent
        TMPFILE=`mktemp ${MC_TMPDIR:-/tmp}/indent.XXXXXX` || exit 1
        EXT=$(echo %f | sed 's/.*\.//')
        cat %b > $TMPFILE
        if [[ $EXT == 'go' ]]; then
        cat $TMPFILE | sed -E 's/^([^$])/\t\1/' > %b
        else
        cat $TMPFILE | sed -E 's/^([^$])/  \1/' > %b
        fi
        rm -f $TMPFILE

# ~/.local/share/mc/mcedit/macros.d/macro.4.sh
u       unindent
        TMPFILE=`mktemp ${MC_TMPDIR:-/tmp}/unindent.XXXXXX` || exit 1
        EXT=$(echo %f | sed 's/.*\.//')
        cat %b > $TMPFILE
        if [[ $EXT == 'go' ]]; then
        cat $TMPFILE | sed 's/^\t//' > %b
        else
        cat $TMPFILE | sed 's/^\ \ //' > %b
        fi
        rm -f $TMPFILE