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Expanded tab settings to accommodate different styles. #455

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Merged
henry2cox merged 2 commits into from
Feb 12, 2026
+28 −12
Merged

Expanded tab settings to accommodate different styles. #455

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c26b1fe
Expanded tab settings to accommodate different styles.
Feb 12, 2026
a5170c1
fix typo
Feb 12, 2026
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27 changes: 17 additions & 10 deletions bin/genhtml
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Original file line number Diff line number Diff line change
Expand Up @@ -7254,12 +7254,6 @@ if ($css_filename) {
}
}

# Make sure tab_size is within valid range
if ($tab_size < 1) {
print(STDERR "ERROR: invalid number of spaces specified: $tab_size!\n");
exit(1);
}

# Get HTML prolog and epilog
$html_prolog = get_html_prolog($html_prolog_file);
$html_epilog = get_html_epilog($html_epilog_file);
Expand Down Expand Up @@ -7474,7 +7468,10 @@ HTML OUTPUT
--header-title BANNER Banner at top of each HTML page
--footer FOOTER Footer at bottom of each HTML page
--no-sourceview Do not create source code view
--num-spaces NUM Replace tabs with NUM spaces in source view
--num-spaces NUM change appearance of tabs in source view
NUM == 0 will not touch tabs
NUM > 0 will replace them with NUM spaces
NUM < 0 will only change their appearance
--legend Include color legend in HTML output
--html-prolog FILE Use FILE as HTML prolog for generated pages
--html-epilog FILE Use FILE as HTML epilog for generated pages
Expand Down Expand Up @@ -8477,9 +8474,11 @@ sub escape_html($)
$string =~ s/>/&gt;/g; # > -> &gt;
$string =~ s/\"/&quot;/g; # " -> &quot;

while ($string =~ /^([^\t]*)(\t)/) {
my $replacement = " " x ($tab_size - (length($1) % $tab_size));
$string =~ s/^([^\t]*)(\t)/$1$replacement/;
if ($tab_size > 0) {
while ($string =~ /^([^\t]*)(\t)/) {
my $replacement = " " x ($tab_size - (length($1) % $tab_size));
$string =~ s/^([^\t]*)(\t)/$1$replacement/;
}
}

$string =~ s/\n/<br>/g; # \n -> <br>
Expand Down Expand Up @@ -9358,6 +9357,7 @@ sub write_css_file()
font-family: monospace;
white-space: pre;
margin-top: 2px;
tab-size: #TAB_SIZE;
}

/* elided/removed code */
Expand Down Expand Up @@ -9559,6 +9559,13 @@ END_OF_DATE_SPAN
$css_data =~ s/$key/$color/gm;
}

if ($tab_size < 0) {
my $abs_tab_size = abs($tab_size);
$css_data =~ s/#TAB_SIZE/$abs_tab_size/gm;
} else {
$css_data =~ s/^.*#TAB_SIZE.*\n//gm;
}

print(CSS_HANDLE $css_data);

close(CSS_HANDLE) or die("unable to close CSS handle: $!\n");
Expand Down
13 changes: 11 additions & 2 deletions man/genhtml.1
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Expand Up @@ -2686,8 +2686,17 @@ the coverage criteria check or the serialized coverage DB,
.RE
.BI "\-\-num\-spaces " spaces
.RS
Replace tabs in source view with
.I num
Change appearance of tabs in source view according to
.IR spaces .

When set to 0, tabs and their behaviour will be the browser's default.
.br
Negative values will set the rendered width in the source view to
.I spaces
spaces.
.br
Positive values will replace tabs with
.I spaces
spaces.

Default value is 8.
Expand Down