Format listed issues plainly when STDIN is not a TTY

When calling pit from other programs or as part of a pipe, the display
style typically used to format listed issues contains a lot of unwanted
output (ANSI escape code, headings, etc.). Now when STDIN is not a TTY,
a plain and consistently formatted version of the issues is listed
without any additional formatting, one issue per line of output.

pit.nimble

@@ -1,6 +1,6 @@
 # Package
 
-version       = "4.24.1"
+version       = "4.25.0"
 author        = "Jonathan Bernard"
 description   = "Personal issue tracker."
 license       = "MIT"

src/pit.nim

@@ -70,6 +70,24 @@ proc formatIssue*(issue: Issue): string =
 
   result &= termReset
 
+proc formatPlainIssueSummary*(issue: Issue): string =
+
+  result = "$#: $# $#" % [
+    $issue.state,
+    ($issue.id)[0..<6],
+    issue.summary ]
+
+  if issue.hasProp("delegated-to") or issue.hasProp("pending"):
+    var parts = newSeq[string]()
+
+    if issue.hasProp("delegated-to"):
+      parts.add("delegated to " & issue["delegated-to"])
+
+    if issue.hasProp("pending"):
+      parts.add("pendin: " & issue["pending"])
+
+    result &= "($#)" % [ parts.join("; ") ]
+
 proc formatSectionIssue*(
     issue: Issue,
     width: int = 80,
@@ -251,7 +269,15 @@ proc list(
           it.hasProp("completed") and
           sameDay(getTime().local, it.getDateTime("completed")))
 
-      stdout.write ctx.formatSection(ctx.issues[state], state, "", verbose)
+      if isatty(stdin):
+        stdout.write ctx.formatSection(ctx.issues[state], state, "", verbose)
+
+      else:
+        stdout.writeLine ctx.issues[state]
+          .mapIt(formatPlainIssueSummary(it))
+          .join("\n")
+
+
     trace "listing complete"
     return
 
@@ -279,7 +305,13 @@ proc list(
           not (it.hasProp("hide-until") and
                it.getDateTime("hide-until") > getTime().local))
 
-        stdout.write ctx.formatSection(visibleIssues, s, indent, verbose)
+        if isatty(stdin):
+          stdout.write ctx.formatSection(visibleIssues, s, indent, verbose)
+
+        else:
+          stdout.writeLine visibleIssues
+            .mapIt(formatPlainIssueSummary(it))
+            .join("\n")
 
   # Future items
   if future:
@@ -296,7 +328,13 @@ proc list(
           not (it.hasProp("hide-until") and
                it.getDateTime("hide-until") > getTime().local))
 
-        stdout.write ctx.formatSection(visibleIssues, s, indent, verbose)
+        if isatty(stdin):
+          stdout.write ctx.formatSection(visibleIssues, s, indent, verbose)
+
+        else:
+          stdout.writeLine visibleIssues
+            .mapIt(formatPlainIssueSummary(it))
+            .join("\n")
 
   trace "listing complete"
 

src/pitpkg/cliconstants.nim

@@ -1,4 +1,4 @@
-const PIT_VERSION* = "4.24.1"
+const PIT_VERSION* = "4.25.0"
 
 const USAGE* = """Usage:
   pit ( new | add) <summary> [<state>] [options]