recognize Terminology via DA3 of ~~TY

TERMINALS.md

@@ -84,7 +84,7 @@ relies on the font. Patches to correct/complete this table are very welcome!
 | [Tabby](https://github.com/Eugeny/tabby) | ? | ? | ? | ? | |
 | [Terminal.app](https://en.wikipedia.org/wiki/Terminal_(macOS)) | ? | ? | ? | `TERM=xterm-256color`| No RGB |
 | [Terminator](https://github.com/software-jessies-org/jessies/wiki/Terminatorhttps://github.com/software-jessies-org/jessies/wiki/Terminator)      | ✅                 |  ?    |?       | ?                               | |
-| [Terminology](https://github.com/borisfaure/terminology)     | ❌                 |  ❌   |?       | `TERM=terminology`              | |
+| [Terminology](https://github.com/borisfaure/terminology)     | ❌                 |  ❌   |?       | `TERM=terminology`              | Identified via DA3. 256 colors, no RGB. |
 | [Tilda](https://github.com/lanoxx/tilda)  |       |  ?    |?       | ?                               | |
 | [tmux](https://github.com/tmux/tmux/wiki) | ✅    |  ❌   |n/a     |`TERM=tmux-256color` `COLORTERM=24bit`| `tmux.conf` must apply `Tc`; see below. `bce` is available with the `tmux-256color-bce` definition. |
 | [WezTerm](https://github.com/wez/wezterm) | ✅    |  ✅   |?       |`TERM=wezterm` `COLORTERM=24bit` | See below. |

src/lib/input.c

@@ -915,6 +915,8 @@ stash_string(query_state* inits){
     case STATE_TDA1:
       if(strcmp(inits->runstring, "~VTE") == 0){
         inits->qterm = TERMINAL_VTE;
+      }else if(strcmp(inits->runstring, "~~TY") == 0){
+        inits->qterm = TERMINAL_TERMINOLOGY;
       }else if(strcmp(inits->runstring, "FOOT") == 0){
         inits->qterm = TERMINAL_FOOT;
       }

src/lib/input.h

@@ -31,6 +31,7 @@ typedef enum {
     TERMINAL_ALACRITTY,     // can't be detected; match TERM+DA2
     TERMINAL_CONTOUR,       // XTVERSION == 'contour ver'
     TERMINAL_ITERM,         // XTVERSION == 'iTerm2 [ver]'
+    TERMINAL_TERMINOLOGY,   // TDA: "~~TY"
 } queried_terminals_e;
 
 // sets up the input layer, building a trie of escape sequences and their

src/lib/termdesc.c

@@ -488,10 +488,12 @@ apply_term_heuristics(tinfo* ti, const char* termname, int fd,
     if(add_pushcolors_escapes(ti, tablelen, tableused)){
       return -1;
     }
+    // FIXME remove synchronization mode; it's still broken in 0.21.2, and we
+    // don't need it anyway
   }else if(qterm == TERMINAL_ALACRITTY){
     termname = "Alacritty";
     ti->caps.quadrants = true;
-    // ti->caps.sextants = true; // alacritty https://github.com/alacritty/alacritty/issues/4409 */
+    // ti->caps.sextants = true; // alacritty https://github.com/alacritty/alacritty/issues/4409
     ti->caps.rgb = true;
     // Alacritty implements DCS ASU, but no detection for it
     if(add_appsync_escapes_dcs(ti, tablelen, tableused)){
@@ -561,6 +563,9 @@ apply_term_heuristics(tinfo* ti, const char* termname, int fd,
       termname = "Linux console";
     }
     ti->caps.braille = false; // no caps.braille, no caps.sextants in linux console
+  }else if(qterm == TERMINAL_TERMINOLOGY){
+    termname = "Terminology";
+    ti->caps.rgb = false; // as of at least 1.9.0
   }
   // run a wcwidth(⣿) to guarantee libc Unicode 3 support, independent of term
   if(wcwidth(L'⣿') < 0){