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-rw-r--r--src/doctokenizer.l2
1 files changed, 1 insertions, 1 deletions
diff --git a/src/doctokenizer.l b/src/doctokenizer.l
index b1aa82f..a08fef0 100644
--- a/src/doctokenizer.l
+++ b/src/doctokenizer.l
@@ -378,7 +378,7 @@ SPCMD2 {CMD}[\\@<>&$#%~".+=|-]
SPCMD3 {CMD}_form#[0-9]+
SPCMD4 {CMD}"::"
SPCMD5 {CMD}":"
-INOUT "inout"|"in"|"out"|("in"{BLANK}*","{BLANK}*"out")|("out"{BLANK}*","{BLANK}*"in")
+INOUT "in"|"out"|("in"{BLANK}*","?{BLANK}*"out")|("out"{BLANK}*","?{BLANK}*"in")
PARAMIO {CMD}param{BLANK}*"["{BLANK}*{INOUT}{BLANK}*"]"
VARARGS "..."
TEMPCHAR [a-z_A-Z0-9.,: \t\*\&\(\)\[\]]