NAME

aerc-stylesets - styleset file specification for aerc(1)

SYNOPSIS

aerc uses a simple configuration syntax to configure the styleset for its ui.

STYLESET CONFIGURATION

The styleset is described as <object>.<attribute> = <value> pairs.

For example, in the line below, the foreground color of the style object msglist_unread is set to cornflowerblue

The configuration also allows wildcard matching of the keys to configure multiple style objects at a time.

ATTRIBUTES

The following options are available to be modified for each of the style objects.

<object>.fg = <color>

<object>.bg = <color>

<object>.bold = true|false|toggle

<object>.blink = true|false|toggle

<object>.underline = true|false|toggle

<object>.italic = true|false|toggle

<object>.dim = true|false|toggle

<object>.reverse = true|false|toggle

<object>.normal = true

<object>.default = true

STYLE OBJECTS

The style objects represent the various ui elements or ui instances for styling.

These next style objects only affect the built-in colorize filter and must be declared under a [viewer] section of the styleset file.

User defined styles can be used to style arbitrary strings in go-templates (see .Style in aerc-templates(7)). User styles must be defined in the [user] ini section. Styles can be referenced by their name (e.g. red.fg is named "red").

Example:

[user]
red.fg=red

User styles are layered with other styles applied to the context in which they are rendered. The user style colors (fg and/or bg) will only be effective if the context style does not define any. Other boolean attributes will be merged with the underlying style boolean attributes.

For example, if the context style is:

And the inline style is:

The effective style will be:

FNMATCH STYLE WILDCARD MATCHING

The styleset configuration can be made simpler by using the fnmatch style wildcard matching for the style object.

The special characters used in the fnmatch wildcards are:

For example, the following wildcards can be made using this syntax.

Note that the statements in a given styleset are parsed in the order in which they are written. That means that with the following styleset:

msglist_marked.fg = pink
msglist_*.fg = white

The msglist_marked.fg attribute will be set to white.

SELECTED MODIFIER

The selected modifier can be applied to any style object. The style provided for the selected modifier is applied on top of the style object it corresponds to.

If you would like to make sure message that are flagged as read in the msglist appear in yellow foreground and black background. You can specify that with this:

If we specify the global style selected modifier using fnmatch as below:

This toggles the reverse switch for selected version of all the style objects.

selected objects inherit from all attributes of their non-selected counterparts. selected statements are parsed after non-selected ones and effectively override the attributes of the non-selected style object.

LAYERED STYLES

Some styles, (currently the msglist_* and dirlist_* ones) are applied in layers. If a style differs from the base (in this case *list_default) then that style applies, unless overridden by a higher layer. If fg and bg colors are not defined explicitly (or defined to the default color) they will be considered as "transparent" and the colors from the lower layer will be used instead.

The order that msglist_* styles are applied in is, from first to last:

1.

msglist_default

2.

msglist_unread

3.

msglist_read

4.

msglist_answered

5.

msglist_flagged

6.

msglist_deleted

7.

msglist_result

8.

msglist_thread_folded

9.

msglist_marked

So, the marked style will override all other msglist styles.

The order for dirlist_* styles is:

1.

dirlist_default

2.

dirlist_unread

3.

dirlist_recent

DYNAMIC MESSAGE LIST STYLES

All msglist_* styles can be defined for specific email header values. The syntax is as follows:

If <header_value> starts with a tilde character ~, it will be interpreted as a regular expression.

Examples:

msglist*.X-Sourcehut-Patchset-Update,APPROVED.fg = green
msglist*.X-Sourcehut-Patchset-Update,NEEDS_REVISION.fg = yellow
msglist*.X-Sourcehut-Patchset-Update,REJECTED.fg = red
"msglist_*.Subject,~^(\[[w-]+]\s*)?\[(RFC )?PATCH.fg" = #ffffaf
"msglist_*.Subject,~^(\[[w-]+]\s*)?\[(RFC )?PATCH.selected.fg" = #ffffaf

When a dynamic style is matched to an email header, it will be used in priority compared to its non-dynamic counterpart. Provided the following styleset:

msglist_marked.fg = blue
msglist_*.Subject,~foobar.fg = red

An email with foobar it its subject will be colored in red all the time, since msglist_* also applies to msglist_marked.

COLORS

The color values are set using the values accepted by the tcell library. The values can be one of the following.

default

<Color name>

<Hex code>

<Dec number>

DEFAULTS

Before parsing a styleset, it is first initialized with the following defaults:

*.selected.reverse=toggle
title.reverse=true
header.bold=true
*error.bold=true
error.fg=red
warning.fg=yellow
success.fg=green
statusline*.default=true
statusline_default.reverse=true
statusline_error.fg=red
statusline_error.reverse=true
statusline_warning.fg=yellow
statusline_warning.reverse=true
msglist_unread.bold=true
msglist_deleted.fg=gray
msglist_result.fg=green
msglist_pill.reverse=true
part_mimetype.dim=true
part_mimetype.selected.dim=false
part_filename.selected.bold=true
completion_pill.reverse=true
tab.reverse=true
border.reverse = true
selector_focused.reverse=true
selector_chooser.bold=true

You can choose either to reset everything by starting your styleset with these two lines:

*.default=true
*.normal=true

Or selectively override style object attributes.

SEE ALSO

aerc(1) aerc-config(5)

AUTHORS

Originally created by Drew DeVault and maintained by Robin Jarry who is assisted by other open source contributors. For more information about aerc development, see https://sr.ht/~rjarry/aerc/.