templates: add compactDir function

This will be used in the dirtree-format replacement by templates.

Signed-off-by: Robin Jarry <robin@jarry.cc>
Acked-by: Tim Culverhouse <tim@timculverhouse.com>

2 files changed, 14 insertions, 0 deletions

diff --git a/doc/aerc-templates.7.scd b/doc/aerc-templates.7.scd
index 8e1bcf1b..91745e8c 100644
--- a/doc/aerc-templates.7.scd
+++ b/doc/aerc-templates.7.scd
@@ -352,6 +352,15 @@ aerc provides the following additional functions:
 	{{cwd}}
 	```
 
+*compactDir*
+	Reduce a directory path into a compact form. The directory name will be
+	split with _/_ and each part will be reduced to the first letter in its
+	name: _INBOX/01_WORK/PROJECT_ will become _I/W/PROJECT_.
+
+	```
+	{{compactPath .Folder}}
+	```
+
 *version*
 	Returns the version of aerc, which can be useful for things like X-Mailer.
 
diff --git a/lib/templates/functions.go b/lib/templates/functions.go
index 0b0a4546..1cbdc85d 100644
--- a/lib/templates/functions.go
+++ b/lib/templates/functions.go
@@ -246,6 +246,10 @@ func trimSignature(message string) string {
 	return res.String()
 }
 
+func compactDir(path string) string {
+	return format.CompactPath(path, os.PathSeparator)
+}
+
 var templateFuncs = template.FuncMap{
 	"quote":         quote,
 	"wrapText":      wrapText,
@@ -266,4 +270,5 @@ var templateFuncs = template.FuncMap{
 	"cwd":           cwd,
 	"join":          join,
 	"trimSignature": trimSignature,
+	"compactDir":    compactDir,
 }