add a Shell builtin, default fish, with per-family prompt integration

1 files changed, 8 insertions, 0 deletions

diff --git a/src/config.zig b/src/config.zig
index a8e3639f..9451a2a7 100644
--- a/src/config.zig
+++ b/src/config.zig
@@ -128,6 +128,8 @@ pub const leader_path = paths: {
         // reason Look and Exec have none)
         .ThemeSel = "tt",
         .Theme = null,
+        // ...and `Shell` takes the name of a binary, so it has none either
+        .Shell = null,
         // the image toggles join the same `t` group; Palette takes `l` because
         // `p` is Petscii's and `c` is Colors'.
         .Petscii = "tp",
@@ -430,6 +432,12 @@ test "wheel drift guard" {
 
 // ---- layout numbers that are taste ----
 
+/// What a terminal pane runs until someone says otherwise (the Shell builtin,
+/// or a `Shell <name>` line in the config file). A bare NAME, resolved against
+/// the usual bin directories at spawn time — so a machine without it falls
+/// back rather than opening a pane that dies at exec.
+pub const default_shell = "fish";
+
 /// the file pane's line-number gutter, in columns
 pub const PREFIX_W: u16 = 5;
 /// soft wrap (the Wrap builtin): the glyph a wrapped row ends with, in the one