docs: state the validation status and correct claims the material contradicts

Assisted-by: DeepSeek V4.1 Flash
2026-09-20 01:40:51 +02:00
parent 2931bbd6b2
commit f0d5238c47
22 changed files with 356 additions and 191 deletions
@@ -41,6 +41,13 @@ List files whose formatting differs from gasm's.
 .TP
 .B \-w
 Write the result to the source file.
+.SH EXIT STATUS
+Exits 0 on success, 1 when a path cannot be read or written, and 2 on a
+usage error (combining
+.B \-l
+and
+.BR \-d ,
+or an unknown flag).
 .SH EXAMPLES
 .nf
 gasm fmt                                reformat every .s below here