[cleanup] Misc fixes (see desc)

* [tvver] Fix bug in 6837633a4a - Closes #4054
* [rumble] Fix tests - Closes #3976
* [make] Remove `cat` abuse - Closes #3989
* [make] Revert #3684 - Closes #3814
* [utils] Improve `get_elements_by_class` - Closes #3993
* [utils] Inherit `Namespace` from `types.SimpleNamespace`
* [utils] Use `re.fullmatch` for matching filters
* [jsinterp] Handle quotes in `_separate`
* [make_readme] Allow overshooting last line

Authored by: pukkandan, kwconder, MrRawes, Lesmiscore

devscripts/make_readme.py

@@ -11,6 +11,7 @@ README_FILE = 'README.md'
 OPTIONS_START = 'General Options:'
 OPTIONS_END = 'CONFIGURATION'
 EPILOG_START = 'See full documentation'
+ALLOWED_OVERSHOOT = 2
 
 DISABLE_PATCH = object()
 
@@ -28,6 +29,7 @@ def apply_patch(text, patch):
 
 options = take_section(sys.stdin.read(), f'\n  {OPTIONS_START}', f'\n{EPILOG_START}', shift=1)
 
+max_width = max(map(len, options.split('\n')))
 switch_col_width = len(re.search(r'(?m)^\s{5,}', options).group())
 delim = f'\n{" " * switch_col_width}'
 
@@ -44,6 +46,12 @@ PATCHES = (
         rf'(?m)({delim}\S+)+$',
         lambda mobj: ''.join((delim, mobj.group(0).replace(delim, '')))
     ),
+    (  # Allow overshooting last line
+        rf'(?m)^(?P<prev>.+)${delim}(?P<current>.+)$(?!{delim})',
+        lambda mobj: (mobj.group().replace(delim, ' ')
+                      if len(mobj.group()) - len(delim) + 1 <= max_width + ALLOWED_OVERSHOOT
+                      else mobj.group())
+    ),
     (  # Avoid newline when a space is available b/w switch and description
         DISABLE_PATCH,  # This creates issues with prepare_manpage
         r'(?m)^(\s{4}-.{%d})(%s)' % (switch_col_width - 6, delim),