runtime(spec): Recognize epoch when making spec changelog in ftplugin

closes: #15537

Signed-off-by: fundawang <[email protected]>
Signed-off-by: Christian Brabandt <[email protected]>

Author: fundawang

runtime/ftplugin/spec.vim

@@ -2,8 +2,9 @@
 " Filename: spec.vim
 " Maintainer: Igor Gnatenko [email protected]
 " Former Maintainer: Gustavo Niemeyer <[email protected]> (until March 2014)
-" Last Change: Mon Jun 01 21:15 MSK 2015 Igor Gnatenko
-" Update by Zdenek Dohnal, 2022 May 17
+" Last Change: 2015 Jun 01
+"  Update by Zdenek Dohnal, 2022 May 17
+"  2024 Sep 10 by Vim Project: add epoch support for spec changelog, #15537
 
 if exists("b:did_ftplugin")
 	finish
@@ -66,9 +67,11 @@ if !exists("*s:SpecChangelog")
 		endif
 		let line = 0
 		let name = ""
+		let epoch = ""
 		let ver = ""
 		let rel = ""
 		let nameline = -1
+		let epochline = -1
 		let verline = -1
 		let relline = -1
 		let chgline = -1
@@ -77,6 +80,9 @@ if !exists("*s:SpecChangelog")
 			if name == "" && linestr =~? '^Name:'
 				let nameline = line
 				let name = substitute(strpart(linestr,5), '^[	 ]*\([^ 	]\+\)[		]*$','\1','')
+			elseif epoch == "" && linestr =~? '^Epoch:'
+				let epochline = line
+				let epoch = substitute(strpart(linestr,6), '^[     ]*\([^         ]\+\)[          ]*$','\1','')
 			elseif ver == "" && linestr =~? '^Version:'
 				let verline = line
 				let ver = substitute(strpart(linestr,8), '^[	 ]*\([^ 	]\+\)[		]*$','\1','')
@@ -93,6 +99,7 @@ if !exists("*s:SpecChangelog")
 		if nameline != -1 && verline != -1 && relline != -1
 			let include_release_info = exists("g:spec_chglog_release_info")
 			let name = s:ParseRpmVars(name, nameline)
+			let epoch = s:ParseRpmVars(epoch, epochline)
 			let ver = s:ParseRpmVars(ver, verline)
 			let rel = s:ParseRpmVars(rel, relline)
 		else
@@ -117,6 +124,9 @@ if !exists("*s:SpecChangelog")
 		if chgline != -1
 			let tmptime = v:lc_time
 			language time C
+			if strlen(epoch)
+				let ver = epoch.":".ver
+			endif
 			let parsed_format = "* ".strftime(format)." - ".ver."-".rel
 			execute "language time" tmptime
 			let release_info = "+ ".name."-".ver."-".rel