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Add support empty prompt (for issue #14) #17

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Merged
merged 1 commit into from
Nov 5, 2018
Merged

Add support empty prompt (for issue #14) #17

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18 changes: 18 additions & 0 deletions README.md
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Original file line number Diff line number Diff line change
Expand Up @@ -88,6 +88,24 @@ set -g @prefix_highlight_output_prefix '< '
set -g @prefix_highlight_output_suffix ' >'
```

The empty (shown when prefix is off) prompt and attribute can be configured,
It is useful for aligning segments.

```tmux.conf
set -g @prefix_highlight_empty_prompt ' ' # default is '' (empty char)
set -g @prefix_highlight_empty_attr 'fg=default,bg=green' # default is 'fg=default,bg=default'
```

Defaultly, empty prompt can't be attached optional affixes.
If you want attach affixes on empty prompt, config `@prefix_highlight_empty_has_affixes` to `on`.

```tmux.conf
set -g @prefix_highlight_empty_has_affixes 'on' # default is 'off'
set -g @prefix_highlight_empty_prompt 'Tmux'
set -g @prefix_highlight_output_prefix '< '
set -g @prefix_highlight_output_suffix ' >'
```

### License

[MIT](LICENSE)
36 changes: 29 additions & 7 deletions prefix_highlight.tmux
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Original file line number Diff line number Diff line change
Expand Up @@ -14,6 +14,9 @@ show_copy_config='@prefix_highlight_show_copy_mode'
copy_attr_config='@prefix_highlight_copy_mode_attr'
prefix_prompt='@prefix_highlight_prefix_prompt'
copy_prompt='@prefix_highlight_copy_prompt'
empty_prompt='@prefix_highlight_empty_prompt'
empty_attr_config='@prefix_highlight_empty_attr'
empty_has_affixes='@prefix_highlight_empty_has_affixes'

tmux_option() {
local -r value=$(tmux show-option -gqv "$1")
Expand All @@ -30,8 +33,10 @@ tmux_option() {
default_fg='colour231'
default_bg='colour04'
default_copy_attr='fg=default,bg=yellow'
default_empty_attr='fg=default,bg=default'
default_prefix_prompt=$(tmux_option prefix | tr "[:lower:]" "[:upper:]" | sed 's/C-/\^/')
default_copy_prompt='Copy'
default_empty_prompt=''

highlight() {
local -r \
Expand All @@ -42,16 +47,23 @@ highlight() {
copy_highlight="$5" \
output_prefix="$6" \
output_suffix="$7" \
copy="$8"
copy="$8" \
empty="$9"

local -r status_value="$(tmux_option "$status")"
local -r prefix_with_optional_affixes="$output_prefix$prefix$output_suffix"
local -r copy_with_optional_affixes="$output_prefix$copy$output_suffix"

if [[ "on" = "$empty_has_affixes" ]]; then
local -r empty_with_optional_affixes="$output_prefix$empty$output_suffix"
else
local -r empty_with_optional_affixes="$empty"
fi

if [[ "on" = "$show_copy_mode" ]]; then
local -r fallback="${copy_highlight}#{?pane_in_mode,$copy_with_optional_affixes,}"
local -r fallback="${copy_highlight}#{?pane_in_mode,$copy_with_optional_affixes,${empty_highlight}$empty_with_optional_affixes}"
else
local -r fallback=""
local -r fallback="${empty_highlight}$empty_with_optional_affixes"
fi

local -r highlight_on_prefix="${prefix_highlight}#{?client_prefix,$prefix_with_optional_affixes,$fallback}#[default]"
Expand All @@ -67,11 +79,15 @@ main() {
output_suffix=$(tmux_option "$output_suffix" " ") \
copy_attr=$(tmux_option "$copy_attr_config" "$default_copy_attr") \
prefix_prompt=$(tmux_option "$prefix_prompt" "$default_prefix_prompt") \
copy_prompt=$(tmux_option "$copy_prompt" "$default_copy_prompt")
copy_prompt=$(tmux_option "$copy_prompt" "$default_copy_prompt") \
empty_prompt=$(tmux_option "$empty_prompt" "$default_empty_prompt") \
empty_attr=$(tmux_option "$empty_attr_config" "$default_empty_attr") \
empty_has_affixes=$(tmux_option "$empty_has_affixes" "off")

local -r \
prefix_highlight="#[fg=$fg_color,bg=$bg_color]" \
copy_highlight="${copy_attr:+#[default,$copy_attr]}"
copy_highlight="${copy_attr:+#[default,$copy_attr]}" \
empty_highlight="${empty_attr:+#[default,$empty_attr]}"

highlight "status-right" \
"$prefix_prompt" \
Expand All @@ -80,7 +96,10 @@ main() {
"$copy_highlight" \
"$output_prefix" \
"$output_suffix" \
"$copy_prompt"
"$copy_prompt" \
"$empty_prompt" \
"$empty_highlight" \
"$empty_has_affixes"

highlight "status-left" \
"$prefix_prompt" \
Expand All @@ -89,7 +108,10 @@ main() {
"$copy_highlight" \
"$output_prefix" \
"$output_suffix" \
"$copy_prompt"
"$copy_prompt" \
"$empty_prompt" \
"$empty_highlight" \
"$empty_has_affixes"
}

main