keys: Improve descriptions of editor hotkeys.

- Remove the common prefix "jump [to]", mentioning the targets directly
  (shortens the length of the help text without a reduction in clarity)
- Use "Start" instead of "Beginning" (consistent with existing uses)
- Clarify that Shift+Left (and equivalent) includes the current word
- Use the simpler "Swap" instead of "Transpose"
- Consistently use "Previous" in descriptions

Hotkeys document regenerated.

docs/hotkeys.md

@@ -87,12 +87,12 @@
 ## Editor: Navigation
 |Command|Key Combination|
 | :--- | :---: |
-|Jump to the beginning of line|<kbd>Ctrl</kbd> + <kbd>a</kbd> / <kbd>Home</kbd>|
-|Jump to the end of line|<kbd>Ctrl</kbd> + <kbd>e</kbd> / <kbd>End</kbd>|
-|Jump backward one word|<kbd>Meta</kbd> + <kbd>b</kbd> / <kbd>Shift</kbd> + <kbd>Left</kbd>|
-|Jump forward one word|<kbd>Meta</kbd> + <kbd>f</kbd> / <kbd>Shift</kbd> + <kbd>Right</kbd>|
-|Jump to the previous line|<kbd>Up</kbd> / <kbd>Ctrl</kbd> + <kbd>p</kbd>|
-|Jump to the next line|<kbd>Down</kbd> / <kbd>Ctrl</kbd> + <kbd>n</kbd>|
+|Start of line|<kbd>Ctrl</kbd> + <kbd>a</kbd> / <kbd>Home</kbd>|
+|End of line|<kbd>Ctrl</kbd> + <kbd>e</kbd> / <kbd>End</kbd>|
+|Start of current or previous word|<kbd>Meta</kbd> + <kbd>b</kbd> / <kbd>Shift</kbd> + <kbd>Left</kbd>|
+|Start of next word|<kbd>Meta</kbd> + <kbd>f</kbd> / <kbd>Shift</kbd> + <kbd>Right</kbd>|
+|Previous line|<kbd>Up</kbd> / <kbd>Ctrl</kbd> + <kbd>p</kbd>|
+|Next line|<kbd>Down</kbd> / <kbd>Ctrl</kbd> + <kbd>n</kbd>|
 
 ## Editor: Text Manipulation
 |Command|Key Combination|
@@ -105,6 +105,6 @@
 |Cut backwards to the start of the current word|<kbd>Ctrl</kbd> + <kbd>w</kbd> / <kbd>Meta</kbd> + <kbd>Backspace</kbd>|
 |Cut the current line|<kbd>Meta</kbd> + <kbd>x</kbd>|
 |Paste last cut section|<kbd>Ctrl</kbd> + <kbd>y</kbd>|
-|Delete previous character (to left)|<kbd>Ctrl</kbd> + <kbd>h</kbd>|
-|Transpose characters|<kbd>Ctrl</kbd> + <kbd>t</kbd>|
+|Delete previous character|<kbd>Ctrl</kbd> + <kbd>h</kbd>|
+|Swap with previous character|<kbd>Ctrl</kbd> + <kbd>t</kbd>|
 

zulipterminal/config/keys.py

@@ -322,32 +322,32 @@ class KeyBinding(TypedDict):
     },
     'BEGINNING_OF_LINE': {
         'keys': ['ctrl a', 'home'],
-        'help_text': 'Jump to the beginning of line',
+        'help_text': 'Start of line',
         'key_category': 'editor_navigation',
     },
     'END_OF_LINE': {
         'keys': ['ctrl e', 'end'],
-        'help_text': 'Jump to the end of line',
+        'help_text': 'End of line',
         'key_category': 'editor_navigation',
     },
     'ONE_WORD_BACKWARD': {
         'keys': ['meta b', 'shift left'],
-        'help_text': 'Jump backward one word',
+        'help_text': 'Start of current or previous word',
         'key_category': 'editor_navigation',
     },
     'ONE_WORD_FORWARD': {
         'keys': ['meta f', 'shift right'],
-        'help_text': 'Jump forward one word',
+        'help_text': 'Start of next word',
         'key_category': 'editor_navigation',
     },
     'PREV_LINE': {
         'keys': ['up', 'ctrl p'],
-        'help_text': 'Jump to the previous line',
+        'help_text': 'Previous line',
         'key_category': 'editor_navigation',
     },
     'NEXT_LINE': {
         'keys': ['down', 'ctrl n'],
-        'help_text': 'Jump to the next line',
+        'help_text': 'Next line',
         'key_category': 'editor_navigation',
     },
     'UNDO_LAST_ACTION': {
@@ -392,12 +392,12 @@ class KeyBinding(TypedDict):
     },
     'DELETE_LAST_CHARACTER': {
         'keys': ['ctrl h'],
-        'help_text': 'Delete previous character (to left)',
+        'help_text': 'Delete previous character',
         'key_category': 'editor_text_manipulation',
     },
     'TRANSPOSE_CHARACTERS': {
         'keys': ['ctrl t'],
-        'help_text': 'Transpose characters',
+        'help_text': 'Swap with previous character',
         'key_category': 'editor_text_manipulation',
     },
     'FULL_RENDERED_MESSAGE': {