[hackers] [st] Add bold off SGR || Quentin Rameau

[git]

commit 6cb6d61525931c88971cce323f63e40451a6d365
Author:     Quentin Rameau <quinq@fifth.space>
AuthorDate: Sun May 28 09:56:57 2017 +0200
Commit:     Quentin Rameau <quinq@fifth.space>
CommitDate: Sat Jun 3 22:28:35 2017 +0200

    Add bold off SGR

diff --git a/st.c b/st.c
index ae93ade..8d4a9f2 100644
--- a/st.c
+++ b/st.c
@@ -1402,6 +1402,9 @@ tsetattr(int *attr, int l)
                case 9:
                        term.c.attr.mode |= ATTR_STRUCK;
                        break;
+               case 21:
+                       term.c.attr.mode &= ~ATTR_BOLD;
+                       break;
                case 22:
                        term.c.attr.mode &= ~(ATTR_BOLD | ATTR_FAINT);
                        break;