st

Personal fork of ST from suckless.org; st is a simple terminal implementation for X.
git clone git://git.swab.dev/st.git
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commit 74d6abfee5a1455c7c126d6b78760efd65d9d7c3
parent c3b6345595c6b5ec5925544a2f462458f16cbf6a
Author: Roberto E. Vargas Caballero <k0ga@shike2.com>
Date:   Mon, 24 Sep 2012 10:29:37 +0200

Add some documentetion to tsetmode

The names of the terminal modes supported by vt102 are (taken from the VT220
programmer reference manual):

Table 4-7 ANSI-Standardized Modes
Name  Mnemonic		    Parameter (Ps)
Error (ignored)		    -         0 (3/0)
Keyboard action		    KAM	      2 (3/2)
Insert/replace		    IRM	      4 (3/4)
Send/receive		    SRM	      12 (3/1 3/2)
Line feed/new line	    LNM       20 (3/2 3/0)

Table 4-8 ANSI-Compatible DEC Private Modes
Name  Mnemonic		  Parameter (Ps)
Error (ignored)		  -	    0 (3/0)
Cursor key		  DECCKM    1 (3/1)
ANSI/VT52		  DECANM    2 (3/2)
Column			  DECCOLM   3 (3/3)
Scroll			  DECSCLM   4 (3/4)
Screen			  DECSCNM   5 (3/5)
Origin			  DECOM	    6 (3/6)
Auto wrap		  DECAWM    7 (3/7)
Auto repeat		  DECARM    8 (3/8)
Printer form feed	  DECPFF    18 (3/1 3/8)
Printer extent		  DECPEX    19 (3/1 3/9)
Text cursor enable	  DECTCEM   25 (3/2 3/5)
National replacement character sets DECNRCM 42 (3/4 3/2)

This patch adds a comment for each one of these sequences.
---
 st.c |   26 +++++++++++++++++++++-----
 1 file changed, 21 insertions(+), 5 deletions(-)
Diffstat:
Mst.c | 26+++++++++++++++++++++-----
1 file changed, 21 insertions(+), 5 deletions(-)

diff --git a/st.c b/st.c @@ -1280,7 +1280,8 @@ tsetmode(bool priv, bool set, int *args, int narg) { for(lim = args + narg; args < lim; ++args) { if(priv) { switch(*args) { - case 1: + break; + case 1: /* DECCKM -- Cursor key */ MODBIT(term.mode, set, MODE_APPKEYPAD); break; case 5: /* DECSCNM -- Reverve video */ @@ -1289,9 +1290,14 @@ tsetmode(bool priv, bool set, int *args, int narg) { if(mode != term.mode) redraw(); break; - case 7: + case 6: /* XXX: DECOM -- Origin */ + break; + case 7: /* DECAWM -- Auto wrap */ MODBIT(term.mode, set, MODE_WRAP); break; + case 8: /* XXX: DECARM -- Auto repeat */ + break; + case 0: /* Error (IGNORED) */ case 12: /* att610 -- Start blinking cursor (IGNORED) */ break; case 25: @@ -1319,6 +1325,12 @@ tsetmode(bool priv, bool set, int *args, int narg) { tcursor((set) ? CURSOR_SAVE : CURSOR_LOAD); break; default: + /* case 2: DECANM -- ANSI/VT52 (NOT SUPPOURTED) */ + /* case 3: DECCOLM -- Column (NOT SUPPORTED) */ + /* case 4: DECSCLM -- Scroll (NOT SUPPORTED) */ + /* case 18: DECPFF -- Printer feed (NOT SUPPORTED) */ + /* case 19: DECPEX -- Printer extent (NOT SUPPORTED) */ + /* case 42: DECNRCM -- National characters (NOT SUPPORTED) */ fprintf(stderr, "erresc: unknown private set/reset mode %d\n", *args); @@ -1326,13 +1338,17 @@ tsetmode(bool priv, bool set, int *args, int narg) { } } else { switch(*args) { - case 2: + case 0: /* Error (IGNORED) */ + break; + case 2: /* KAM -- keyboard action */ MODBIT(term.mode, set, MODE_KBDLOCK); break; - case 4: + case 4: /* IRM -- Insertion-replacement */ MODBIT(term.mode, set, MODE_INSERT); break; - case 20: + case 12: /* XXX: SRM -- Send/Receive */ + break; + case 20: /* LNM -- Linefeed/new line */ MODBIT(term.mode, set, MODE_CRLF); break; default: